APA (7th ed.) Citation

Atwater, R., & Sullivan, N. (2009). Mr. popper's penguins (Unabridged.).

Chicago Style (17th ed.) Citation

Atwater, Richard, and Nick Sullivan. Mr. Popper's Penguins. Unabridged. 2009.

MLA (8th ed.) Citation

Atwater, Richard, and Nick Sullivan. Mr. Popper's Penguins. Unabridged. 2009.

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