APA (7th ed.) Citation

Lewis, C. S. (1952). Mere christianity. Macmillan.

Chicago Style (17th ed.) Citation

Lewis, C. S. Mere Christianity. New York: Macmillan, 1952.

MLA (9th ed.) Citation

Lewis, C. S. Mere Christianity. Macmillan, 1952.

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