Frances Eliza Hodgson Burnett was a British-American novelist and playwright. She is best known for the three children's novels Little Lord Fauntleroy (1886), A Little Princess (1905), and The Secret …
Wyss is best remembered for his book The Swiss Family Robinson. A pastor with four sons, it is said that he was inspired by Defoe's Robinson Crusoe to write a story …
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).