Cita APA (7a ed.)

Valentine, C. (1966). The normal child and some of his abnormalities: A general introduction to the psychology of childhood. Penguin Books.

Cita Chicago Style (17a ed.)

Valentine, C.W. The Normal Child and Some of His Abnormalities: A General Introduction to the Psychology of Childhood. Harmondsworth: Penguin Books, 1966.

Cita MLA (9a ed.)

Valentine, C.W. The Normal Child and Some of His Abnormalities: A General Introduction to the Psychology of Childhood. Penguin Books, 1966.