Subscribe to The Chicago Manual of Style Online
Citation, Documentation of Sources
Q. I’m writing a paper in which I periodically have to repeat quotations, or parts of quotations, that I have already used earlier in the work. I’ve looked through CMOS but I still can’t work out how this should be done. I could just repeat the citation (I’m using author-date style), but this seems cumbersome.
A. Bingo! Repeating author-date citations is not pretty, but when you’re identifying quotations, whether previously quoted or not, it gets the job done. An alternative is to use abbreviations for the titles of works you cite frequently, in which case you should provide a list of abbreviations somewhere.