Kaplan, R. E. (1999). Internalizing Strengths. Center for Creative Leadership.
Cita Chicago Style (17a ed.)Kaplan, Robert E. Internalizing Strengths. Center for Creative Leadership, 1999.
Cita MLA (8a ed.)Kaplan, Robert E. Internalizing Strengths. Center for Creative Leadership, 1999.
Precaución: Estas citas no son 100% exactas.