Citation, Documentation of Sources

Q. I am working on a manuscript for a book where the author is quoting a poem he has written, but has not yet published. I believe there should be a citation so as to verify he has not used someone else’s poem without permission and also to give him the credit of being the author. What would a proper citation look like?

A. I’m afraid I can’t agree that you need any form of citation. I do agree that it would be a service to readers to indicate somewhere that the poem is by the author, either at the beginning or end of the poem, in the text, or in a note, if there are notes.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]