APA (7th ed.) Citation

Whitfield, D., & Whitfield, R. G. (1991). The state of the prisons - 200 years on. Routledge.

Chicago Style (17th ed.) Citation

Whitfield, Dick, and Richard G. Whitfield. The State of the Prisons - 200 Years on. London [u.a.]: Routledge, 1991.

MLA (9th ed.) Citation

Whitfield, Dick, and Richard G. Whitfield. The State of the Prisons - 200 Years on. Routledge, 1991.