APA (7th ed.) Citation

Howe, P., & Rayyan, O. (2009). Waggit again. HarperCollins.

Chicago Style (17th ed.) Citation

Howe, Peter, and Omar Rayyan. Waggit Again. New York: HarperCollins, 2009.

MLA (8th ed.) Citation

Howe, Peter, and Omar Rayyan. Waggit Again. HarperCollins, 2009.

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