Wonnacott, P., & Wonnacott, R. J. (1990). Economics (4th.ed.). John Wiley & sons.
芝加哥风格引文Wonnacott, Paul, 与 Ronald J. Wonnacott. Economics. 4th.ed. New York: John Wiley & sons, 1990.
MLA引文Wonnacott, Paul, 与 Ronald J. Wonnacott. Economics. 4th.ed. John Wiley & sons, 1990.
警告：这些引文格式不一定是100％准确.