"Joy to the World" is one of the most popular Christmas carols we sing, and yet the writer, Isaac Watts, didn't originally intend for it to be used as such. He wrote it based on Psalm 98, which highlights how we should praise God for what He has done - especially for sending Jesus to the world as a baby so long ago. Open this booklet and read the ten reflections that will help you see why Jesus is worth celebrating this season. And be sure to read A Final Thought at the end to see how "Joy to the World" is tied into Christmas and how you are a part of this miracle.
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.