APA (7th ed.) Citation

De Groat, D. (2009). Gilbert, the surfer dude. HarperCollins.

Chicago Style (17th ed.) Citation

De Groat, Diane. Gilbert, the Surfer Dude. New York: HarperCollins, 2009.

MLA (8th ed.) Citation

De Groat, Diane. Gilbert, the Surfer Dude. HarperCollins, 2009.

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