Clark, C. (1970). The economics of irrigation. Oxford: Pergamon Press.
Trích dẫn kiểu ChicagoClark, Colin. The Economics of Irrigation. Oxford: Pergamon Press, 1970.
MLA引文Clark, Colin. The Economics of Irrigation. Oxford: Pergamon Press, 1970.
警告:這些引文格式不一定是100%准確.