APA (7th ed.) Citation

Clements, A., & Elliott, M. (2009). Extra credit. Atheneum Books for Young Readers.

Chicago Style (17th ed.) Citation

Clements, Andrew, and Mark Elliott. Extra Credit. New York: Atheneum Books for Young Readers, 2009.

MLA (9th ed.) Citation

Clements, Andrew, and Mark Elliott. Extra Credit. Atheneum Books for Young Readers, 2009.

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