Cita APA (7a ed.)

Leider, R. (2010). The power of purpose: Find meaning, live longer, better (2nd ed.). Berrett-Koehler Publishers.

Cita Chicago Style (17a ed.)

Leider, Richard. The Power of Purpose: Find Meaning, Live Longer, Better. 2nd ed. San Francisco: Berrett-Koehler Publishers, 2010.

Cita MLA (8a ed.)

Leider, Richard. The Power of Purpose: Find Meaning, Live Longer, Better. 2nd ed. Berrett-Koehler Publishers, 2010.