APA (7th ed.) Zitazioa
Smith, H., & Smith, M. (2008). The art of helping others: Being around, being there, being wise. Jessica Kingsley Publishers.
Chicago Style (17th ed.) Zitazioa
Smith, Heather, eta Mark Smith. The Art of Helping Others: Being Around, Being There, Being Wise. London ; Philadelphia: Jessica Kingsley Publishers, 2008.
MLA (9th ed.) Zitazioa
Smith, Heather, eta Mark Smith. The Art of Helping Others: Being Around, Being There, Being Wise. Jessica Kingsley Publishers, 2008.
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