Bergson, A. (1966). Essays in normative economics. Cambridge: The Belknap.
Trích dẫn kiểu ChicagoBergson, Abram. Essays in Normative Economics. Cambridge: The Belknap, 1966.
MLA引文Bergson, Abram. Essays in Normative Economics. Cambridge: The Belknap, 1966.
警告：这些引文格式不一定是100％准确.