Cita APA (7a ed.)

Hadfield, J. A. (1962). Childhood and adolescence. Penguin Books.

Cita Chicago Style (17a ed.)

Hadfield, J. A. Childhood and Adolescence. Baltimore: Penguin Books, 1962.

Cita MLA (8a ed.)

Hadfield, J. A. Childhood and Adolescence. Penguin Books, 1962.