APA (7th ed.) Citation

Atwater, R. (2011). Mr. popper's penguins. Open Road Media Teen & Tween.

Chicago Style (17th ed.) Citation

Atwater, Richard. Mr. Popper's Penguins. New York: Open Road Media Teen & Tween, 2011.

MLA (8th ed.) Citation

Atwater, Richard. Mr. Popper's Penguins. Open Road Media Teen & Tween, 2011.

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