Dyfyniad APA

Chapra, S. C. (1997). Surface water-quality modeling. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Chapra, Steven C. Surface Water-quality Modeling. New York: McGraw-Hill, 1997.

Dyfyniad MLA

Chapra, Steven C. Surface Water-quality Modeling. New York: McGraw-Hill, 1997.

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