APA (7th ed.) Citation

Collingwood & Boucher. (1989). Essays in political philosophy. Clarendon Press.

Chicago Style (17th ed.) Citation

Collingwood and Boucher. Essays in Political Philosophy. Oxford: Clarendon Press, 1989.

MLA (9th ed.) Citation

Collingwood and Boucher. Essays in Political Philosophy. Clarendon Press, 1989.