Dyfyniad APA

Rumble, G. The costs and economics of open and distance learning.

Dyfyniad Arddull Chicago

Rumble, Greville. The Costs and Economics of Open and Distance Learning.

Dyfyniad MLA

Rumble, Greville. The Costs and Economics of Open and Distance Learning.

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