Citation, Documentation of Sources

Q. In your view, is it permissible in notes/biblio to decide on either “Fall” or “Autumn” for periodical dates and make it consistent, or do we have to follow the individual periodical’s nomenclature?

A. When citing a source, it’s best to use words that reflect the source itself. If an issue of a journal says “Fall,” use “Fall.” If it says “May/June,” use that. When readers follow a citation where it leads and find that the cited facts of publication match those recorded with the source itself, their confidence in your work will grow.

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