Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Snyder, C. R., y Shane J. Lopez. Positive Psychology: The Scientific and Practical Explorations of Human Strengths. Thousand Oaks, California [etc.]: Sage, 2007.

Cita MLA (9a ed.)

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