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Dyfyniad Arddull ChicagoSople, Vinod V. E-marketing in Digital Age: Text and Cases. 2nd ed. New Delhi: Biztantra, 2014.
Dyfyniad MLASople, Vinod V. E-marketing in Digital Age: Text and Cases. 2nd ed. Biztantra, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.