Clark, C., & Haswell, M. R. (1966). The economics of subsistence agriculture (2d ed.). Macmillan.
芝加哥风格引文Clark, Colin, 与 Margaret Rosary Haswell. The Economics of Subsistence Agriculture. 2d ed. London: Macmillan, 1966.
MLA引文Clark, Colin, 与 Margaret Rosary Haswell. The Economics of Subsistence Agriculture. 2d ed. Macmillan, 1966.
警告：这些引文格式不一定是100％准确.