Cita APA

Snyder, C. R., & Lopez, S. J. (2007). Positive psychology: The scientific and practical explorations of human strengths. SAGE Publications.

Chicago Edition Citation

Snyder, C. R., i Shane J. Lopez. Positive Psychology: The Scientific and Practical Explorations of Human Strengths. New Delhi: SAGE Publications, 2007.

Cita MLA

Snyder, C. R., i Shane J. Lopez. Positive Psychology: The Scientific and Practical Explorations of Human Strengths. SAGE Publications, 2007.