Dyfyniad APA

Loshin, P., & Vacca , J. (2007). Electronic commerce (4th ed.). Firewall media.

Dyfyniad Arddull Chicago

Loshin, Pete, and John Vacca. Electronic Commerce. 4th ed. Bangalore: Firewall media, 2007.

Dyfyniad MLA

Loshin, Pete, and John Vacca. Electronic Commerce. 4th ed. Firewall media, 2007.

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