Hurst, A. (2014). The purpose economy: How your desire for impact, personal growth and community is changing the world. USA: Elevate.
Chicago Style aipamenaHurst, Aaron. The Purpose Economy: How Your Desire for Impact, Personal Growth and Community Is Changing the World. USA: Elevate, 2014.
MLA aipamenaHurst, Aaron. The Purpose Economy: How Your Desire for Impact, Personal Growth and Community Is Changing the World. USA: Elevate, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.