Cita APA (7a ed.)

Clark, C. (1970). The Economics of irrigation (2nd edition.). Pergamon.

Cita Chicago Style (17a ed.)

Clark, Colin. The Economics of Irrigation. 2nd edition. Oxford: Pergamon, 1970.

Cita MLA (8a ed.)

Clark, Colin. The Economics of Irrigation. 2nd edition. Pergamon, 1970.