APA (7th ed.) Citation

Clark, C., & Haswell, M. (1967). The economics of subsistence agriculture (Third Edition.). St. Martin's Press.

Chicago Style (17th ed.) Citation

Clark, Colin, and Margaret Haswell. The Economics of Subsistence Agriculture. Third Edition. London, Macmillan; New York: St. Martin's Press, 1967.

MLA (9th ed.) Citation

Clark, Colin, and Margaret Haswell. The Economics of Subsistence Agriculture. Third Edition. St. Martin's Press, 1967.