The secret’s out-and so are the agents! Mad #18 is our all-espionage issue, featuring Peter Kuper’s final installment of Spy vs. Spy! Celebrating the 60-year-saga of Antonio Prohías’ sneaky secret agents, we revisit the work of the artists and writers who contributed to this iconic cartoon, including Duck Edwing, Bob Clarke, and Dave Manak. Plus, we’re “Wishin’ for the Impossible,” watching “James Bomb,” play one awful game of “Charades,” and, as usual, try to “Forget Smart.”
Various is the correct author for any book with multiple unknown authors, and is acceptable for books with multiple known authors, especially if not all are known or the list is very long (over 50).
If an editor is known, however, Various is not necessary. List the name of the editor as the primary author (with role "editor"). Contributing authors' names follow it.
Note: WorldCat is an excellent resource for finding author information and contents of anthologies.