Case, K. E., & Fair, R. C. (2004). Principles of economics (7th ed.). Prentice Hall.
芝加哥风格引文Case, Karl E., 与 Ray C. Fair. Principles of Economics. 7th ed. Upper Saddle River, N.J.: Prentice Hall, 2004.
MLA引文Case, Karl E., 与 Ray C. Fair. Principles of Economics. 7th ed. Prentice Hall, 2004.
警告：这些引文格式不一定是100％准确.