APA (7th ed.) Citation

Williams, P., & Pratt, A. (2015). Happy! G.P. Putnam's Sons, an imprint of Penguin Random House.

Chicago Style (17th ed.) Citation

Williams, Pharrell, and Amanda Pratt. Happy! New York, NY: G.P. Putnam's Sons, an imprint of Penguin Random House, 2015.

MLA (8th ed.) Citation

Williams, Pharrell, and Amanda Pratt. Happy! G.P. Putnam's Sons, an imprint of Penguin Random House, 2015.

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