APA

Lewis C. S., Lewis C. S. & Rouben Mamoulian Collection (Library of Congress). (19621961). The screwtape letters & Screwtape proposes a toast. New York: Macmillan.

Chicago

Lewis C S, Lewis C S and Rouben Mamoulian Collection (Library of Congress). 19621961. The screwtape letters & Screwtape proposes a toast. New York: Macmillan.

Harvard

Lewis C. S., Lewis C. S. and Rouben Mamoulian Collection (Library of Congress). (19621961). The screwtape letters & Screwtape proposes a toast. New York: Macmillan.

MLA

Lewis C S, Lewis C S and Rouben Mamoulian Collection (Library of Congress). The screwtape letters & Screwtape proposes a toast. New York: Macmillan. 19621961.