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Dyfyniad Arddull ChicagoChunawalla, S. Essentials of Marketing Research: Theory and Practice. Bombay: Himalaya, 1995.
Dyfyniad MLAChunawalla, S. Essentials of Marketing Research: Theory and Practice. Himalaya, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.