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Dyfyniad Arddull ChicagoKinnear, Thomas C., and James R. Taylor. Marketing Research: An Applied Approach. 4th ed. New York: McGraw-Hill, 1991.
Dyfyniad MLAKinnear, Thomas C., and James R. Taylor. Marketing Research: An Applied Approach. 4th ed. McGraw-Hill, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.