APA (7th ed.) Citation

Walker, N. (1991). Why punishn. Oxford University Press.

Chicago Style (17th ed.) Citation

Walker, Nigel. Why Punishn. Oxford, England: Oxford University Press, 1991.

MLA (9th ed.) Citation

Walker, Nigel. Why Punishn. Oxford University Press, 1991.

Warning: These citations may not always be 100% accurate.