Cita APA (7a ed.)

Peterson, C., & Seligman, M. E. P. (2004). Character strengths and virtues: A handbook and classification. American Psychological Association ; Oxford University Press.

Cita Chicago Style (17a ed.)

Peterson, Christopher, y Martin E. P. Seligman. Character Strengths and Virtues: A Handbook and Classification. Washington, DC : New York: American Psychological Association ; Oxford University Press, 2004.

Cita MLA (8a ed.)

Peterson, Christopher, y Martin E. P. Seligman. Character Strengths and Virtues: A Handbook and Classification. American Psychological Association ; Oxford University Press, 2004.