Robbins, L. R. (1949). An essay on the nature & significance of economic science (2nd ed., rev., and extended.). Macmillan.
芝加哥风格引文Robbins, Lionel Robbins. An Essay on the Nature & Significance of Economic Science. 2nd ed., rev., and extended. London: Macmillan, 1949.
MLA引文Robbins, Lionel Robbins. An Essay on the Nature & Significance of Economic Science. 2nd ed., rev., and extended. Macmillan, 1949.
警告：这些引文格式不一定是100％准确.