APA (7th ed.) Citation

Eyal, N., & Hoover, R. (2014). Hooked: How to build habit-forming products. Portfolio/Penguin.

Chicago Style (17th ed.) Citation

Eyal, Nir, and Ryan Hoover. Hooked: How to Build Habit-forming Products. New York, New York: Portfolio/Penguin, 2014.

MLA (8th ed.) Citation

Eyal, Nir, and Ryan Hoover. Hooked: How to Build Habit-forming Products. Portfolio/Penguin, 2014.

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