APA (7th ed.) Citation

Van Inwagen, P. (2006). The problem of evil: The Gifford lectures delivered in the University of St Andrews in 2003 The Gifford lectures.

Chicago Style (17th ed.) Citation

Van Inwagen, Peter. "The Problem of Evil: The Gifford Lectures Delivered in the University of St Andrews in 2003." The Gifford Lectures 2006.

MLA (8th ed.) Citation

Van Inwagen, Peter. "The Problem of Evil: The Gifford Lectures Delivered in the University of St Andrews in 2003." The Gifford Lectures, 2006.