APA Style

Koalas. (2009). London: Heinle Cengage Learning.

Chicago Style

Koalas. . London: Heinle Cengage Learning, 2009. .

MLA Style

Koalas. . London: Heinle Cengage Learning, 2009. .

Turabian Style

Koalas. London: Heinle Cengage Learning, 2009. .