Mays, L. W. (2011). Water resources engineering (2nd ed.). Wiley.
Dyfyniad Arddull ChicagoMays, Larry W. Water Resources Engineering. 2nd ed. Hoboken, N.J: Wiley, 2011.
Dyfyniad MLAMays, Larry W. Water Resources Engineering. 2nd ed. Wiley, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.