Received with much acclaim when first published, the titles in this mini-set examine anthropology from the perspectives of economics and geography. International in scope, covering material on Africa, America, Asia and Europe, the detailed studies are supported with numerous maps and illustrations.
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.