Gray, A. (1961). The development of economic doctrine. John Wiley & Sons.
芝加哥风格引文Gray, Alexander. The Development of Economic Doctrine. New York: John Wiley & Sons, 1961.
MLA引文Gray, Alexander. The Development of Economic Doctrine. John Wiley & Sons, 1961.
警告：这些引文格式不一定是100％准确.