APA (7e ed.) Bronvermelding

Cummings, R. G. (1972). Water resources management in northern Mexico. Resources for the Future.

Chicago (17e ed.) Bronvermelding

Cummings, Ronald G. Water Resources Management in Northern Mexico. Wash.: Resources for the Future, 1972.

MLA (8e ed.) Bronvermelding

Cummings, Ronald G. Water Resources Management in Northern Mexico. Resources for the Future, 1972.