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.
This story is probably going to keep a part of me in its portrait. I already had great expectations before reading it and it has fulfilled all of them. It’s not only the story or the characters, but also the feelings over the pages. If you really get into the story you can catch glimpses of secrets, feelings and probably half of them are interpretations that only exist in my head, and probably anyone who reads the story isn’t going to get through the same experience I did, but for me it has meant so much.