APA (7th ed.) Citation
Eyal, N., & Hoover, R. (2019). 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. London: Portfolio/Penguin, 2019.
MLA (9th ed.) Citation
Eyal, Nir, and Ryan Hoover. Hooked: How to Build Habit-Forming Products. Portfolio/Penguin, 2019.
Warning: These citations may not always be 100% accurate.