APA (7th ed.) Citation

McGovern, E. M., & Muller, H. D. (1994). They're never too young for books: A guide to children's books for ages 1 to 8. Prometheus Books.

Chicago Style (17th ed.) Citation

McGovern, Edythe M., and Helen D. Muller. They're Never Too Young for Books: A Guide to Children's Books for Ages 1 to 8. Buffalo, N.Y.: Prometheus Books, 1994.

MLA (9th ed.) Citation

McGovern, Edythe M., and Helen D. Muller. They're Never Too Young for Books: A Guide to Children's Books for Ages 1 to 8. Prometheus Books, 1994.