APA引文

Lewis, C. S. (1957). The screwtape letters. MacMillam company.

芝加哥风格引文

Lewis, C. S. The Screwtape Letters. New York: MacMillam company, 1957.

MLA引文

Lewis, C. S. The Screwtape Letters. MacMillam company, 1957.

警告：这些引文格式不一定是100％准确.