Cita APA (7a ed.)

Smith, H., & Smith, M. (2008). The art of helping others: Being around, being there, being wise. Jessica Kingsley Publishers.

Cita Chicago Style (17a ed.)

Smith, Heather, y Mark Smith. The Art of Helping Others: Being Around, Being There, Being Wise. London ; Philadelphia: Jessica Kingsley Publishers, 2008.

Cita MLA (9a ed.)

Smith, Heather, y Mark Smith. The Art of Helping Others: Being Around, Being There, Being Wise. Jessica Kingsley Publishers, 2008.