Lewis, C. S. (1957). The screwtape letters. MacMillam company.
Chicagoスタイル(17版)引用形式Lewis, C. S. The Screwtape Letters. New York: MacMillam company, 1957.
MLA(9版)引用形式Lewis, C. S. The Screwtape Letters. MacMillam company, 1957.
警告: この引用は必ずしも正確ではありません.