APA (7th ed.) Citation

Clark, C., & Haswell, M. R. (1964). The economics of subsistence agriculture. Macmillan [u.a.].

Chicago Style (17th ed.) Citation

Clark, Colin, and Margaret Rosary Haswell. The Economics of Subsistence Agriculture. London: Macmillan [u.a.], 1964.

MLA (9th ed.) Citation

Clark, Colin, and Margaret Rosary Haswell. The Economics of Subsistence Agriculture. Macmillan [u.a.], 1964.