The Chicago Manual of Style (17th ed.) (CMOS) Notes-Bibliography
Sources are cited with sequentially-numbered notes creating a unique note number for each time a source is cited either as a footnote at the bottom or the page or an endnote at the end of the paper. Provide the full note the first time you cite a source and use the shorter note for subsequent citations.
Example of a first note and a shortened subsequent note:
1 Anne Beamish, “A Garden in the Street: The Introduction of Street Trees in Boston and New York,” Studies in the History of Gardens & Designed Landscapes 38, no. 1 (January 2, 2018): 42, https://doi.org/10.1080/14601176.2017.1281034.
2 Beamish, “A Garden in the Street,” 43.
Example of a bibliography entry at the end of the paper:
Note: In some cases, your professor may allow you to use the shortened in-text notes for all notes when a bibliography is included or not require a bibliography. If unsure of the requirements, it is safest to include both the longer first note along with the bibliography at the end of the paper.
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