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Dyfyniad Arddull ChicagoNargundkar, Rajendra. Marketing Research: Text and Cases. 3rd. McGraw Hill.
Dyfyniad MLANargundkar, Rajendra. Marketing Research: Text and Cases. 3rd. McGraw Hill.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.