APA (7th ed.) Zitazioa
Leider, R. (2010). The power of purpose: Find meaning, live longer, better (2nd ed.). Berrett-Koehler Publishers.
Chicago Style (17th ed.) Zitazioa
Leider, Richard. The Power of Purpose: Find Meaning, Live Longer, Better. 2nd ed. San Francisco, CA: Berrett-Koehler Publishers, 2010.
MLA (9th ed.) Zitazioa
Leider, Richard. The Power of Purpose: Find Meaning, Live Longer, Better. 2nd ed. Berrett-Koehler Publishers, 2010.
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