Willis, F. R. (1987). Western civilization: A belief introduction. Macmillan.
芝加哥风格引文Willis, F. Roy. Western Civilization: A Belief Introduction. New York: Macmillan, 1987.
MLA引文Willis, F. Roy. Western Civilization: A Belief Introduction. Macmillan, 1987.
警告：这些引文格式不一定是100％准确.