APA Citation

Willems, M. (2012). The duckling gets a cookie!? New York: Hyperion Books for Children.

Chicago Style Citation

Willems, Mo. The Duckling Gets a Cookie!? New York: Hyperion Books for Children, 2012.

MLA Citation

Willems, Mo. The Duckling Gets a Cookie!? New York: Hyperion Books for Children, 2012.

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