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Dyfyniad Arddull ChicagoHalbert, Michael. The Meaning and Sources of Marketing Theory. New York: McGraw-Hill, 1965.
Dyfyniad MLAHalbert, Michael. The Meaning and Sources of Marketing Theory. McGraw-Hill, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.