Dyfyniad APA

Association for Educational and Training Technology. (1989). International yearbook of educational and training technology. Kogan Page.

Dyfyniad Arddull Chicago

Association for Educational and Training Technology. International Yearbook of Educational and Training Technology. London: Kogan Page, 1989.

Dyfyniad MLA

Association for Educational and Training Technology. International Yearbook of Educational and Training Technology. Kogan Page, 1989.

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