Wagner, H. (1977). Principles of operations research.- 2nd ed (2nd ed.). Prentice Hall.
Dyfyniad Arddull ChicagoWagner, H.M. Principles of Operations Research.- 2nd Ed. 2nd ed. New Delhi: Prentice Hall, 1977.
Dyfyniad MLAWagner, H.M. Principles of Operations Research.- 2nd Ed. 2nd ed. Prentice Hall, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.