Gass, S. I. Linear programming: Methods and applications (5th ed.). McGraw-Hill.
Dyfyniad Arddull ChicagoGass, Saul I. Linear Programming: Methods and Applications. 5th ed. New York: McGraw-Hill.
Dyfyniad MLAGass, Saul I. Linear Programming: Methods and Applications. 5th ed. McGraw-Hill.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.