Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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