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Park, N., Peterson, C. y Seligman, M. E. (2006). Character Strengths in 54 nations and the fifty US states. The Journal of Positive Psychology, 1 (3), 118-129. Recuperado de http://citeseerx.ist.psu.edu/viewdoc/download?
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Rashid, T. y Anjum A. (2011). 340 ways to use strengths. Canada. Recuperado de: https://tayyabrashid.com/pdf/via_strengths.pdf

Biswas-Diener, R., Kashdan, T. B., y Minhas, G. (2011). A dynamic approach to psychological strength development and intervention. The Journal of Positive Psychology, 6 (2), 106 – 118. Recuperado de https://www.psychologytoday.com/files/attachments/
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