APA (7th ed.) Citation

Van Inwagen, P. (1989). An essay on Free Will. Clarendon Pr.

Chicago Style (17th ed.) Citation

Van Inwagen, Peter. An Essay on Free Will. Oxford: Clarendon Pr, 1989.

MLA (9th ed.) Citation

Van Inwagen, Peter. An Essay on Free Will. Clarendon Pr, 1989.

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