Froyen, R. T. (1990). Macroeconomics: Theories and policies (3rd.ed.). Macmillan.
芝加哥风格引文Froyen, Richard T. Macroeconomics: Theories and Policies. 3rd.ed. New York: Macmillan, 1990.
MLA引文Froyen, Richard T. Macroeconomics: Theories and Policies. 3rd.ed. Macmillan, 1990.
警告：这些引文格式不一定是100％准确.