FOR USE IN SCHOOLS AND LIBRARIES ONLY. Presents SpongeBob's adventures as he tries to cure his hiccups, gets the Krusty Krab shut down by baking a cake to cheer up Squidward, and helps his boss, Mr. Krabs, find the perfect cologne for his big date.
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.