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Chicago Citation Guide (17th Edition): Source Quoted in Other Source

Citing Works Quoted in Another Source (Indirect Sources)

Sometimes an author of a publication will quote or paraphrase another person’s work. Maybe you're reading a book on your topic, and the book cites another author's article. The work that is mentioned in the book you are reading is called the original or primary source--the source of the original idea or quote. The book you are reading is called the secondary source--the source that cites or quotes the idea from the original source. You may wish to include the quoted or paraphrased information in your paper. Whenever possible, you should try to find and cite the original source directly.

However, if the original source is not available, you must create a footnote with full citation information for both sources. Your bibliography entry will only include the citation information for the secondary source that you actually read or accessed.

Begin your citation with full citation information for the original source followed by the words "quoted in" and then full citation information for the secondary source. You can find the citation information for the original source by looking at the works cited list, reference list, or bibliography of the secondary source.

Example

You are reading an article by Brammer et al. that includes information from a web article by Mutikani that you would like to include in your essay. Here is how you would format your citations:

 

Footnote (includes citation information for both the original and secondary sources):

1. Lucia Mutikani, "Coronavirus: Over 20 Million Americans Have Now Applied for Unemployment Benefit," Geneva: World Economic Forum, April 16, 2020, https://www.weforum.org/agenda/2020/04/united-states-unemployment-claimants-coronavirus-covid19/, quoted in Stephen Brammer, Layla Branicki, and Martina K. Linnenluecke, “COVID-19, Societalization, and the Future of Business in Society,” Academy of Management Perspectives 34, no. 4 (November 2020): 494, https://doi.org/10.5465/amp.2019.0053.

Bibliography Entry (only the secondary source—in this case, the article you actually accessed—is cited here):

Brammer, Stephen, Layla Branicki, and Martina K. Linnenluecke. “COVID-19, Societalization, and the Future of Business in Society.” Academy of Management Perspectives 34, no. 4 (November 2020): 493–507. https://doi.org/10.5465/amp.2019.0053.