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.
I love the layout of this Bible for reading through the entire Bible cover to cover in a year. I mostly use it for family Bible reading time, but it has encouraged me personally to read the entire Bible for myself personally, and has help me so far to read the entire New Testament 4 times since buying this. My only gripe would be I would really like it in a hardcover or maybe even a nice leather cover. The Paperback style is not my favorite.