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Dyfyniad Arddull ChicagoCLANCY KEVIN J. MARKETING MYTHS THAT ARE KILLING BUSINESS: CURE FOR DEATHWISH MARKETING. NEW YORK: MCGRAW-HILL, 1993.
Dyfyniad MLACLANCY KEVIN J. MARKETING MYTHS THAT ARE KILLING BUSINESS: CURE FOR DEATHWISH MARKETING. MCGRAW-HILL, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.