Cita APA (7a ed.)

Lewis, C. S. (1990). Screwtape proposes a toast: And other pieces. Collins.

Cita Chicago Style (17a ed.)

Lewis, C. S. Screwtape Proposes a Toast: And Other Pieces. Glasgow: Collins, 1990.

Cita MLA (9a ed.)

Lewis, C. S. Screwtape Proposes a Toast: And Other Pieces. Collins, 1990.