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Dyfyniad Arddull ChicagoZachariah, Peter and Rajpal. Encyclopaedia of Economics, Commerce & Management: Vol. 8 Advertising and Promotion Management. ed. New Delhi: Mittal, 1996.
Dyfyniad MLAZachariah, Peter and Rajpal. Encyclopaedia of Economics, Commerce & Management: Vol. 8 Advertising and Promotion Management. ed. Mittal, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.