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Dyfyniad Arddull ChicagoMoutinho, Luiz, and Martin Evans. Applied Marketing Research. England: Addison - wesley, 1992.
Dyfyniad MLAMoutinho, Luiz, and Martin Evans. Applied Marketing Research. Addison - wesley, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.