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Dyfyniad Arddull ChicagoGupta, M. Quantitative Techniques for Decision Making. 2nd. New Delhi: Prentice-Hall of India Pvt. Ltd, 2006.
Dyfyniad MLAGupta, M. Quantitative Techniques for Decision Making. 2nd. Prentice-Hall of India Pvt. Ltd, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.