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Dyfyniad Arddull ChicagoCRAVENS D W. STRATEGIC MARKETING CASES AND APPLICATIONS. HOMEWOOD: IRWIN MCGRAW-HILL, 1986.
Dyfyniad MLACRAVENS D W. STRATEGIC MARKETING CASES AND APPLICATIONS. IRWIN MCGRAW-HILL, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.