Citation, Documentation of Sources

Q. Hello! I’m currently editing a paper that will be submitted to a journal and have come across a very odd endnote in which the client has cited a number of authors and publications within the same note. It is not a direct reference; rather these are all sources in which a general argument has been made. I am confused as to whether this is proper endnote style. I was thinking perhaps they should all be listed separately, then the in-text endnote number could be listed as 1–5, or 1,2,3,4,5. Or perhaps an endnote is unnecessary, given that this refers to a more general philosophical argument of which there are many proponents?

A. It’s normal to list many sources in a single note, whether as direct references or general source notes. For an introduction to notes, please see CMOS chapter 14. For this matter in particular, please see CMOS 14.23 and 14.52.