APA (7th ed.) Citation

Wade, R. (2011). Polar worlds (1st U.S. ed.). Simon & Schuster Books for Young Readers.

Chicago Style (17th ed.) Citation

Wade, Rosalyn. Polar Worlds. 1st U.S. ed. New York: Simon & Schuster Books for Young Readers, 2011.

MLA (8th ed.) Citation

Wade, Rosalyn. Polar Worlds. 1st U.S. ed. Simon & Schuster Books for Young Readers, 2011.

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