A colouring book that offers information about ancient Egypt with some of the most famous objects and patterns taken from the tombs and temples of the pharaohs. It features full colour illustrations with matching black and white line drawings of the same to copy.
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.