Cita APA

Peterson, C., & Seligman, M. (2004). Character strengths and virtues: A handbook and classification. Washington, DC: Oxford University Press.

Citación estilo Chicago

Peterson, Christopher, and Martin Seligman. Character Strengths and Virtues: A Handbook and Classification. Washington, DC: Oxford University Press, 2004.

Cita MLA

Peterson, Christopher, and Martin Seligman. Character Strengths and Virtues: A Handbook and Classification. Washington, DC: Oxford University Press, 2004.