Association for Educational and Training Technology. (1989). International yearbook of educational and training technology. Kogan Page.
Chicago-viite (17. p.)Association for Educational and Training Technology. International Yearbook of Educational and Training Technology. London: Kogan Page, 1989.
MLA-viite (9. p.)Association for Educational and Training Technology. International Yearbook of Educational and Training Technology. Kogan Page, 1989.
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