APA (7th ed.) Citation

Hadfield, J. A. (1966). Childhood and adolescence. Penguin Books.

Chicago Style (17th ed.) Citation

Hadfield, J. A. Childhood and Adolescence. Harmondsworth: Penguin Books, 1966.

MLA (9th ed.) Citation

Hadfield, J. A. Childhood and Adolescence. Penguin Books, 1966.