Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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