Leider, R. (2010). The power of purpose: Find meaning, live longer, better (2nd ed.). Berrett-Koehler Publishers.
Citace podle Chicago (17th ed.)Leider, Richard. The Power of Purpose: Find Meaning, Live Longer, Better. 2nd ed. San Francisco, CA: Berrett-Koehler Publishers, 2010.
Citace podle MLA (9th ed.)Leider, Richard. The Power of Purpose: Find Meaning, Live Longer, Better. 2nd ed. Berrett-Koehler Publishers, 2010.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..