APA

Cummings R. G., Brajer V. & Trava J. (1989). Waterworks: improving irrigation management in mexican agriculture. New York: World Resources Institute.

Chicago

Cummings Ronald G, Brajer Víctor and Trava José. 1989. Waterworks: improving irrigation management in mexican agriculture. New York: World Resources Institute.

Harvard

Cummings R. G., Brajer V. and Trava J. (1989). Waterworks: improving irrigation management in mexican agriculture. New York: World Resources Institute.

MLA

Cummings Ronald G, Brajer Víctor and Trava José. Waterworks: improving irrigation management in mexican agriculture. New York: World Resources Institute. 1989.