Cita APA (7th ed.)

Peck, R. F., & Havighurst, R. J. (1960). The psychology of character development. John Wiley.

Cita Chicago (17th ed.)

Peck, Robert F., i Robert J. Havighurst. The Psychology of Character Development. John Wiley, 1960.

Cita MLA (9th ed.)

Peck, Robert F., i Robert J. Havighurst. The Psychology of Character Development. John Wiley, 1960.