Cita APA (7a ed.)

Achor, S. (2013). Before happiness: The 5 hidden keys to achieving success, spreading happiness, and sustaining positive change. Crown Business.

Cita Chicago Style (17a ed.)

Achor, Shawn. Before Happiness: The 5 Hidden Keys to Achieving Success, Spreading Happiness, and Sustaining Positive Change. New York: Crown Business, 2013.

Cita MLA (8a ed.)

Achor, Shawn. Before Happiness: The 5 Hidden Keys to Achieving Success, Spreading Happiness, and Sustaining Positive Change. Crown Business, 2013.

Precaución: Estas citas no son 100% exactas.