Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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