APA (7th ed.) Citation

Schafer, K. (2000). Penguin planet: Their world, our world. NorthWord Press.

Chicago Style (17th ed.) Citation

Schafer, Kevin. Penguin Planet: Their World, Our World. Minnetonka, Minn.: NorthWord Press, 2000.

MLA (9th ed.) Citation

Schafer, Kevin. Penguin Planet: Their World, Our World. NorthWord Press, 2000.

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