Cita APA (7a ed.)
Lewis, C. The Screwtape Letters: And Screwtape Proposes a Toast. Macmillan.
Cita estilo Chicago (17a ed.)
Lewis, C.S. The Screwtape Letters: And Screwtape Proposes a Toast. Nueva York, EUA: Macmillan.
Cita MLA (9a ed.)
Lewis, C.S. The Screwtape Letters: And Screwtape Proposes a Toast. Macmillan.
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