Dyfyniad APA

Spiller, L. D. (2011). Contemporary direct and interactive marketing (2nd ed.). Dorling kindersly.

Dyfyniad Arddull Chicago

Spiller, Lisa D. Contemporary Direct and Interactive Marketing. 2nd ed. New Delhi: Dorling kindersly, 2011.

Dyfyniad MLA

Spiller, Lisa D. Contemporary Direct and Interactive Marketing. 2nd ed. Dorling kindersly, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.