Dyfyniad APA

SIMPSON, O. (2003). Student retention in online, open and distance learning. Kogan page.

Dyfyniad Arddull Chicago

SIMPSON, Ormond. Student Retention in Online, Open and Distance Learning. Kogan page, 2003.

Dyfyniad MLA

SIMPSON, Ormond. Student Retention in Online, Open and Distance Learning. Kogan page, 2003.

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