Cita APA (7th ed.)

Wallace, H. R., & Masters, L. A. (2006). Personal development for life and work (9th ed.). Thomson/South-Western.

Cita Chicago (17th ed.)

Wallace, Harold R., i L. Ann Masters. Personal Development for Life and Work. 9th ed. Ohio: Thomson/South-Western, 2006.

Cita MLA (8th ed.)

Wallace, Harold R., i L. Ann Masters. Personal Development for Life and Work. 9th ed. Thomson/South-Western, 2006.