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Dyfyniad Arddull ChicagoKeegan, Warren J. Multinational Marketing Management. New Jersey: Prentice-Hall, Inc, 1980.
Dyfyniad MLAKeegan, Warren J. Multinational Marketing Management. New Jersey: Prentice-Hall, Inc, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.