Lewis, C. S. (2001). Mere christianity: A revised and amplified edition, with a new introduction, of the three books, broadcast talks, Christian behaviour, and beyond personality. Harper Collins.

Lewis, C. S. Mere Christianity: A Revised and Amplified Edition, with a New Introduction, of the Three Books, Broadcast Talks, Christian Behaviour, and Beyond Personality. New York (N.Y.): Harper Collins, 2001.

Lewis, C. S. Mere Christianity: A Revised and Amplified Edition, with a New Introduction, of the Three Books, Broadcast Talks, Christian Behaviour, and Beyond Personality. Harper Collins, 2001.