Citation Systems: A Guide to Chicago (CMOS)

A Guide to Chicago (CMOS)

What is CMOS?

Chicago style, also known as CMOS or the Chicago Manual of Style, is another citation system that offers a variety of specifics when it comes to writing assignments. This system is unique for a number of reasons, but something important to note is that there are two types of ways it can be carried out based on the content/course. The two versions of Chicago are the Notes-Bibliography System (NB) and the Author-Date System. Regardless of what is being used, always keep in mind that your professor may have differing requirements, and you should look closely at their directions to ensure you are completing tasks based on those requirements. Some basics to the system are as follows: use 1-to 1.5-inch margins, choose a readable font, double space, and have a dedicated title page.

Notes-Bibliography System:

This may be considered the more traditional Chicago system with its setup and citation format. The ending citation page(s) is typically labeled “Bibliography”.  There may be footnotes used as necessary, and are used in the humanities/arts mainly.

Author-Date System:

This system may resemble APA qualities and is used by those working in the social sciences. The differences in the systems speak to the overall organization but does not change the specific content.

 

Are headings needed?

As with most systems, the headings can be used at the writer’s discretion. There are five levels of headings that can be used based on sections and subsections. A writer may decide they need no headings for one assignment, while they may use all five on another. Just note that if you are going to use them, they must be used in order; you cannot use a level 1 heading and then skip to a level 4 heading. It should go from level 1 to level 2 and so on. Below you can find how each level is formatted as needed:

 

What is a title page?

The title page is similar for both the NB and Author-Date system. A title page is what identifies the paper with the title, writer name, and other important information. The setup should be:

  • The title of your paper centered a third of the way down the paper
  • Several lines later should come your name, still centered
  • One single spaced line in between your name should be the class information
  • Lastly, one single line below the class should be the due date

Some things to keep in mind are that there is no page number on this page. The page count begins on the following page where the content itself starts. The title is normally in all caps as well. Please refer below for an example of the layout.

 

What are citation politics?

Sara Ahmed (2013) defines citation practices “as a rather successful reproductive technology, a way of reproducing the world around certain bodies.” Citation politics is about reproducing sameness. When you are consistently citing the same type of scholar (white, male authors), you are reproducing a narrow set of knowledge. The knowledges of Black, Indigenous, and People of Color, trans, women, non-binary, disability and queer writers are silenced when you only value one voice. When you cite someone, you are legitimizing that knowledge.

For more information, listen to this expert panel video discussion on citation politics.

 

Who should we cite?

You should question who you are citing and why you are citing them. What kinds of knowledge, expertise, and research are you incorporating in your work? Are you citing underrepresented scholars as part of your core argument, and not just footnotes? Whose identities are missing from your reference page? Do your citations reproduce the status quo? How does who you cite change your argument or the research narrative?

 

Why do you need citations?

In-text citations and references are used to give proper credit to the source information you are using in your own work. Plagiarism is a very big deal, even if it is done unintentionally, because it is essentially stealing someone else’s work in order to fill your own paper. This can be done in multiple forms, but it can also be easily avoided with the right knowledge. There are two ways source information may be used: paraphrasing and directly quoting. Paraphrasing tends to be a good route because you can use source information while still letting your own voice come through. Just remember, even if there are not quotation marks being used, any time source information is included, a citation must also be included. Directly quoting is when you are taking information word-for-word from a source. When directly quoting, quotation marks should be included at the beginning and ending points of the quote.

Please keep in mind that different source types have different ways they should be written; in order to give proper credit, sources must be set up a very specific way and knowing the types of sources you are using is critical.

Learn more about plagiarism is and how to avoid it with our plagiarism guide.

 

Citations

NB in-text citations/Footnotes:

In this particular style system, you may not see the typical parenthetical in-text citations that are otherwise common. Within NB, the writer should use superscripts in place of an in-text citation and a footnote at the bottom of the page where source information was used in order to give credit. A different superscript should be used for different source information, even if it is coming from the same source, and multiple different citations should be in the footnote if multiple sources were used throughout the page. The footnote sources look similar to the citations on the bibliography page. There are just a few differences in them. The corresponding citations in the footnote should have the same number in front of them as the superscript shows within the paper itself. Let’s say you are using source information from a book:

*source information should go here.*1 The paper continues as normal. *More source information is used from same source.2  The paper goes on as normal. *Source information from new source.*3

The footnote citation would look like:

  1. Author First Name Last Name, Book Title (Location of Publication: Publisher, Year of Publication), page number.
  2. , *list page number(s)*
  3. Author First Name Last Name, Book Title (Location of Publication: Publisher, Year of Publication), page number.

In Chicago, “ibid” can be used when the same source is being used consecutively for different information. Ibid means “in the same place” and can be used rather than listing the citation again. Keep in mind that ibid can only be used if the source information is consecutive, meaning that if you use another source in between, you will have to re-list the whole citation rather than using the shortcut.

 

NB Bibliography:

Similar to other style systems, when representing your full list of citations at the end of the paper, they should start on a new page with a centered title. In the NB system, this page should be labeled “Bibliography” and there should be about two lines in between this title and the first entry. The entries should go in alphabetical order and have a hanging indent. A hanging indent is when every line after the first of each entry is indented ½ an inch. The bibliography entries are similar to the footnote entries. The main difference is how the author name is written. Rather than it being First Name Last Name, the bibliography style should be Last Name, First Name. Some common source type examples are below:

Book (Printed) Example: Author last name, author first name. Title of Book. Location of Publication: Publisher, Publication Date.

Scholarly Article Example: Author last name, author first name. “Name of Article.” Title of Journal, vol. #, issue # (Year of Publication): page numbers used, DOI or URL.

Webpage Example: Author last name, author first name (if available). “Title of Page.” Name of Site. Publisher, publication date. URL.

*If there is no known author, just go straight into title of page.

Author-Date in-text citations: The Author-Date system has some similarities overall to APA, but there are some important differences to note; so, copying the APA system will not work. In-text citations for this do go by author name and date, but there is no comma to separate them. A page number can be included as well to help locate information, but is not required. A parenthetical citation may look like this: (Smith 2011).

Like usual, the period should follow the parentheses.

Author-Date References: With this system, the page(s) at the end of the paper with full citation information should be labeled “References”, and it should be centered. The entries should go in alphabetical order and have a hanging indent. A hanging indent is when every line after the first of each entry is indented ½ an inch. Below you may find the layout of some common source types:

Book (Printed) Example: Author last name, author first name. Year of Publication. Title of Book. Location of Publication: Publisher.

Scholarly Article Example: Author last name, author first name. Year of Publication. “Name of Article.” In Title of Journal, vol. #, issue #, page numbers used, DOI or URL.

Webpage Example: Author last name, author first name (if available). Year of Publication. “Title of Page.” Name of Site. Publisher. URL.

*If there is no known author, just go straight into title of page.

Please remember to check what kind of source you are using so you know how to cite it. While it can seem easy to choose a random style to cite, figuring out what kind of source you are using and citing it properly is how you correctly give credit and avoid plagiarizing.

 

What to do if information is missing?

It isn’t uncommon for a piece of citing information to not be present when looking at material. When this happens, there are ways to go around it that still provide proper credit to the source. If the author is missing, see if it was written by an organization instead; and if so, use that in place of the author. If there is no organization either, using the title of the article, webpage, book, etc., will suffice. Depending on the type of work, it should go in quotations (if it is a short work, such as an article) or italics (for longer works, such as books). If there is no date, Chicago style states that putting a date accessed (as in the day you are finding the source information) should be sufficient. This is done by writing “Accessed” followed by the month, date, and year you are looking at the source.

 

What is et al. and when to use it?

Et al. is a Latin phrase that means “and others”. It is used to simplify and shorten author lists for citations. In the case of Chicago, et al. should be used for in-text citations/footnote citations when there are 4 or more authors. Only the first author should be listed when this occurs followed by “et al.”, and then the rest of the citation as needed. Take this example in an Author-Date style citation:

(Smith et al. 2009).

For the bibliography/references page, et al. should be used if there are more than 10 authors. Only the first 7 authors should be listed in the citation, then followed by “et al.” and the rest of the citation as normal.

For a general overview, feel free to look at the following checklist that goes over the basic CMOS, and/or make an appointment with a UWC consultant at any time.

We also have a CMOS Basics Checklist.

 

References

  • The CMOS. (2017). Author-Date: Sample Citations. https://www.chicagomanualofstyle.org/tools_citationguide/citation-guide-2.html
  • Lee, C. (2011, November 3). The Proper Use of et al. in APA Style. American Psychological Association. https://blog.apastyle.org/apastyle/2011/11/the-proper-use-of-et-al-in-apa-style.html#:~:text=in%20APA%20Style,-by%20Chelsea%20Lee&text=One%20of%20these%20is%20the,repeated%20referencing%20shorter%20and%20simpler
  • Purdue OWL. (n.d.). CMOS Author-Date Guidelines. https://owl.purdue.edu/owl/research_and_citation/chicago_manual_17th_edition/documents/20180709CMOSADPoster.jpg
  • Purdue OWL. (n.d.). CMOS Author Date PowerPoint Presentation. https://owl.purdue.edu/owl/research_and_citation/chicago_manual_17th_edition/cmos_formatting_and_style_guide/cmos_author_date_powerpoint_presentation.html
  • Purdue OWL. (n.d.). Chicago Manual of Style 17th Edition. https://owl.purdue.edu/owl/research_and_citation/chicago_manual_17th_edition/cmos_formatting_and_style_guide/chicago_manual_of_style_17th_edition.html
  • Purdue OWL. (n.d.). CMOS Notes and Bibliography Guidelines. https://owl.purdue.edu/owl/research_and_citation/chicago_manual_17th_edition/documents/20180702CmosNBPoster.jpg
  • Purdue OWL. (n.d.). General Format. https://owl.purdue.edu/owl/research_and_citation/chicago_manual_17th_edition/cmos_formatting_and_style_guide/general_format.html
  • Purdue OWL. (n.d.). Periodicals. https://owl.purdue.edu/owl/research_and_citation/chicago_manual_17th_edition/cmos_formatting_and_style_guide/periodicals.html
  • Purdue OWL. (n.d.). Web Sources. https://owl.purdue.edu/owl/research_and_citation/chicago_manual_17th_edition/cmos_formatting_and_style_guide/web_sources.html
  • University of Portland. (2020, September 28). Chicago Style Citation Guide: Short Form and Ibid.. https://libguides.up.edu/chicago/short_form