Baumgardner, S. R., & Crothers, M. K. (2009). Positive psychology. Prentice Hall.
Chicago Edition CitationBaumgardner, Steve R., and Marie K. Crothers. Positive Psychology. Upper Saddle River, N.J.: Prentice Hall, 2009.
Deismireacht MLABaumgardner, Steve R., and Marie K. Crothers. Positive Psychology. Prentice Hall, 2009.
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