Formatting Your Paper in Chicago Style
Chicago Manual Style papers are everywhere in the humanities. If you are writing a history or literature essay, your professor probably wants CMS. The basic setup is not complicated, but people waste hours fighting with it because they treat the manual like a mystery novel instead of a reference guide. Let me walk you through what actually matters. Most universities now have a template you can download. When I was grading papers, about 80 percent of formatting problems came from three things: wrong margins, broken footnotes, and the bibliography looking nothing like the citations in the text. Fix those and you are mostly done. Double-space everything. Not the footnotes, not the bibliography—everything. Your margins should be one inch on all sides. A font like Times New Roman at 12 points is standard, though some departments allow 11-point. Check your syllabus before you pick anything else.
The title page is simpler than people think. Center the title about a third of the way down the page, then put your name, course, instructor, and date below it. No subtitle unless your professor wants one. Keep it plain. Footnotes go at the bottom of the page. That is what makes Chicago different from APA or MLA. When you cite something in the text, you use a superscript number after the punctuation mark, not before it. The footnote itself starts on the new line at the bottom. For a book citation, the format is: Author First Last, Title (Place: Publisher, Year), page number. That is it. A magazine article swaps out the place and publisher for the magazine name, issue date, and page range. I ran into a problem once with a student's paper where every footnote had a URL instead of the proper bibliographic entry. CMOS says online sources should include the URL or DOI when there is no print version, but it also requires the access date. The student had pasted ten URLs into the footnote and completely skipped the author, title, and date. It was unreadable. I had them rewrite every single one in the correct format, and it took them about forty minutes because most of the source material was already in their hands. They just did not know what order to put it in.
The bibliography comes at the end and it looks different from a works cited page. Entries are alphabetized by the author's last name, and each entry uses a hanging indent. The footnote and bibliography citation for the same source will differ slightly. Footnotes put the author's full name first; the bibliography flips it to last name first. Do not try to force them to match exactly. That is a mistake I see all the time.
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Common Mistakes That Will Cost You Points
People mess up the footnote number placement constantly. If you write a sentence and cite the last word, the superscript goes after the period, not before it. The same rule applies to citations inside parentheses—the number goes outside the closing parenthesis. This is in the manual, section 15.26, and it does not change. Another thing: ibid. and op. cit. Both are still technically allowed by CMOS 17th edition, but most professors and publishers do not want to see them anymore. Just repeat the full citation or use a shortened version with the author's last name and a shortened title. It is safer and it looks cleaner. The bibliography should not have any extra spaces between entries. Some word processors add a blank line by default, and it is annoying to fix. In Word, go to the Home tab, click the paragraph settings, and set the spacing after each entry to 0 pt. That removes the gap without touching the line spacing inside the entry itself.
One edge case that trips people up: when you cite the same source twice in a row using a shortened citation, you still need the author's name in the shortened form. Writing just Smith, Book Title, 45 is correct. Writing just 45 is not. The manual is clear on this, but students skip it because they think brevity is the goal. It is not. Clarity is.
A Few Things CMOS Gets Wrong or Leaves Vague
For instance, CMOS does not give a strict rule for how many authors to list in a footnote before switching to "et al." The 17th edition says three or more, but some journals and professors prefer two or more. Always check what your instructor wants before you commit to a format. The manual is a guideline, not a law, and nobody enforces it consistently across departments. Another thing: the manual assumes you are writing a traditional academic paper. If you are citing social media posts, podcasts, or GitHub repositories, CMOS does not cover these as thoroughly as it covers books and journals. You will have to adapt the format yourself. I usually fall back to treating them like web pages with a clear description of what the source is. It is not ideal, but it is better than making something up. If you are submitting to a journal that uses Chicago style, they often have their own house guide that overrides the manual in minor ways. Check before you format. I wasted two days once reformatting a bibliography because I followed CMOS exactly and the journal wanted comma placements that the manual does not specify. It was a small thing but it looked unprofessional.
Most schools provide a Chicago style template for Word or Google Docs. Use it. It will save you at least twenty minutes of setup time and eliminate the margin and spacing errors that show up in almost every draft. If your department does not provide one, the CMOS website has a free sample paper you can download and work from directly.
