Berlage, G. (1990). Understanding social issues: Sociological fact finding (2nd ed.). Allyn and Bacon.
芝加哥风格引文Berlage, Gai. Understanding Social Issues: Sociological Fact Finding. 2nd ed. Boston: Allyn and Bacon, 1990.
MLA引文Berlage, Gai. Understanding Social Issues: Sociological Fact Finding. 2nd ed. Allyn and Bacon, 1990.
警告：这些引文格式不一定是100％准确.