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Dyfyniad Arddull ChicagoLee, Sang M., and Marc J. Schniederjans. Operations Management. Boston, India: Houghton Mifflin, All India Publishers, 1994.
Dyfyniad MLALee, Sang M., and Marc J. Schniederjans. Operations Management. Houghton Mifflin, All India Publishers, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.