Kuhlen, R. G. (1952). The psychology of adolescent development. Harper.
Cita Chicago (17th ed.)Kuhlen, Raymond G. The Psychology of Adolescent Development. New York: Harper, 1952.
Cita MLA (9th ed.)Kuhlen, Raymond G. The Psychology of Adolescent Development. Harper, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.