APA (7th ed.) Citation

Stamper, J. B., Enik, T., & Cole, J. (2001). Penguin puzzle. Scholastic.

Chicago Style (17th ed.) Citation

Stamper, Judith Bauer, Ted Enik, and Joanna Cole. Penguin Puzzle. New York: Scholastic, 2001.

MLA (8th ed.) Citation

Stamper, Judith Bauer, et al. Penguin Puzzle. Scholastic, 2001.

Warning: These citations may not always be 100% accurate.