Grab this pocket guide to the best of Bulgarian banter and not only will you be ordering theatre tickets like a seasoned local, you'll be glancing at that Cyrillic alphabet and nodding knowingly too. •two-way dictionary •guide to pronunciation and phrase-building •practicalities - how to get around and grab a bargain •all-important guide to ordering the right coffee
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.