Cita APA (7a ed.)

Valentine, C. W. (1978). The normal child and some of his abnormalities: A gen. introd. to the psychology of childhood (1956, repr.). Penguin Books.

Cita Chicago Style (17a ed.)

Valentine, Charles W. The Normal Child and Some of His Abnormalities: A Gen. Introd. to the Psychology of Childhood. 1956, repr. Harmondsworth: Penguin Books, 1978.

Cita MLA (9a ed.)

Valentine, Charles W. The Normal Child and Some of His Abnormalities: A Gen. Introd. to the Psychology of Childhood. 1956, repr. Penguin Books, 1978.