Dyfyniad APA

Hall, W. A., & Dracup, J. A. (1970). Water resources systems engineering. McGraw-Hill.

Dyfyniad Arddull Chicago

Hall, Warren A., and John A. Dracup. Water Resources Systems Engineering. New York: McGraw-Hill, 1970.

Dyfyniad MLA

Hall, Warren A., and John A. Dracup. Water Resources Systems Engineering. McGraw-Hill, 1970.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.