Citation, Documentation of Sources

Q. I am attempting to proofread and fix the style of the endnotes of a book on communications for a generally humanities audience. My problem is that the author of the book is a lawyer and has cited many law review articles that he considers governed by the Bluebook style. Should I use the general style for citing periodicals in CMOS for the legal articles? As it is, the humanities articles are in CMOS format and the law review articles are in Bluebook format. This hybrid style doesn’t seem acceptable to me. Please help.

Q. I’m copyediting a book that’s using endnotes with no bibliography. For multiple authors, should I use the rule in CMOS and list up to ten authors in the first endnote? What if each chapter in the book I’m copyediting is written by a different author, and these authors differ in the number of authors they list in the endnotes? Does the copyeditor then have a role in imposing consistency?

Q. If a number of references are given in the same endnote, should they be given in any particular order (e.g., alphabetically)?