Não informado. (1989). Educational Technology Research and Development. Association for Educational Communications and Technology.
Čikaški stil citiranja (17. izdanje)Não informado. Educational Technology Research and Development. Washington: Association for Educational Communications and Technology, 1989.
MLA način citiranja (8. izdanje)Não informado. Educational Technology Research and Development. Association for Educational Communications and Technology, 1989.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.