Cita APA (7a ed.)

Lewis, C. S. (1964). Letters to Malcolm: Chiefly on prayer. G. Bles.

Cita Chicago Style (17a ed.)

Lewis, C. S. Letters to Malcolm: Chiefly on Prayer. London: G. Bles, 1964.

Cita MLA (8a ed.)

Lewis, C. S. Letters to Malcolm: Chiefly on Prayer. G. Bles, 1964.