APA (7th ed.) Citation

Walker, D. M. (1980). The Oxford companion to law. Clarendon Pr.

Chicago Style (17th ed.) Citation

Walker, David M. The Oxford Companion to Law. Oxford: Clarendon Pr, 1980.

MLA (9th ed.) Citation

Walker, David M. The Oxford Companion to Law. Clarendon Pr, 1980.