Dyfyniad APA

Kalakota, R. (2009). Frontiers of electronic commerce, 2009. Pearson Education.

Dyfyniad Arddull Chicago

Kalakota, Ravi. Frontiers of Electronic Commerce, 2009. New Delhi: Pearson Education, 2009.

Dyfyniad MLA

Kalakota, Ravi. Frontiers of Electronic Commerce, 2009. Pearson Education, 2009.

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