Peterson, C., & Seligman, M. E. P. (2004). Character strengths and virtues: A handbook and classification. American Psychological Association.
Citace podle Chicago (17th ed.)Peterson, Christopher, a Martin E. P. Seligman. Character Strengths and Virtues: A Handbook and Classification. Washington, D.C: American Psychological Association, 2004.
Citace podle MLA (9th ed.)Peterson, Christopher, a Martin E. P. Seligman. Character Strengths and Virtues: A Handbook and Classification. American Psychological Association, 2004.
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