Cita APA (7a ed.)

Wills, W. D. (1971). Spare the child: The story of an experimental approved school. Penguin Books.

Cita Chicago Style (17a ed.)

Wills, William D. Spare the Child: The Story of an Experimental Approved School. Harmondsworth: Penguin Books, 1971.

Cita MLA (9a ed.)

Wills, William D. Spare the Child: The Story of an Experimental Approved School. Penguin Books, 1971.