Loucks, D. P. (1981). Water resource systems planning and analysis: Capita selecta. New Jersey: Prentice-Hall, Inc.
Dyfyniad Arddull ChicagoLoucks, Daniel P. Water Resource Systems Planning and Analysis: Capita Selecta. New Jersey: Prentice-Hall, Inc, 1981.
Dyfyniad MLALoucks, Daniel P. Water Resource Systems Planning and Analysis: Capita Selecta. New Jersey: Prentice-Hall, Inc, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.