Association for Educational and Training Technology. (1989). International yearbook of educational and training technology. Kogan Page.
Chicago-referens (17:e uppl.)Association for Educational and Training Technology. International Yearbook of Educational and Training Technology. London: Kogan Page, 1989.
MLA-referens (9:e uppl.)Association for Educational and Training Technology. International Yearbook of Educational and Training Technology. Kogan Page, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.