Citation, Documentation of Sources

Q. Dear Editors: I’m familiar with chapter 14 of the manual, but how can I format a citation to an entire issue of a journal: no editors, no special title?

A. Cite it as usual, but without an article title: Critical Inquiry 39, no. 1 (Autumn 2012).

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