APA (7th ed.) Citation

Rosing, N. (1996). The world of the polar bear. Firefly Books.

Chicago Style (17th ed.) Citation

Rosing, Norbert. The World of the Polar Bear. Willowdale, Ont., Canada ; Buffalo, N.Y.: Firefly Books, 1996.

MLA (9th ed.) Citation

Rosing, Norbert. The World of the Polar Bear. Firefly Books, 1996.