American Psychological Association, Aspinwall, L. G., & Staudinger, U. M. (2003). A psychology of human strengths: Fundamental questions and future directions for a positive psychology. American Psychological Association.
Cita Chicago Style (17a ed.)American Psychological Association, Lisa G. Aspinwall, y Ursula M. Staudinger. A Psychology of Human Strengths: Fundamental Questions and Future Directions for a Positive Psychology. Washington: American Psychological Association, 2003.
Cita MLA (9a ed.)American Psychological Association, et al. A Psychology of Human Strengths: Fundamental Questions and Future Directions for a Positive Psychology. American Psychological Association, 2003.
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