APA (7th ed.) Citation

Ryder, J. (2006). A pair of polar bears: Twin cubs find a home at the San Diego Zoo. Simon & Schuster Books for Young Readers.

Chicago Style (17th ed.) Citation

Ryder, Joanne. A Pair of Polar Bears: Twin Cubs Find a Home at the San Diego Zoo. New York: Simon & Schuster Books for Young Readers, 2006.

MLA (8th ed.) Citation

Ryder, Joanne. A Pair of Polar Bears: Twin Cubs Find a Home at the San Diego Zoo. Simon & Schuster Books for Young Readers, 2006.