Gaya APA

Jr_Bill, M., Cale_Eric, . (2010). Polar Bear, Polar Bear, What Do You Hear? . New York: Bill Martin Jr & Eric Cale.

Gaya MLA

Jr_Bill, Martin., Cale_Eric, . "Polar Bear, Polar Bear, What Do You Hear?". New York: Bill Martin Jr & Eric Cale, 2010. Picture Book.