APA (7th ed.) Citation

Avi & Floca, B. (2005). Poppy's return. HarperCollins.

Chicago Style (17th ed.) Citation

Avi and Brian Floca. Poppy's Return. New York: HarperCollins, 2005.

MLA (8th ed.) Citation

Avi and Brian Floca. Poppy's Return. HarperCollins, 2005.

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