Não informado. (1979). Educational communication and technology. Association for Educational Communications and Technology.
Chicago-Zitierstil (17. Ausg.)Não informado. Educational Communication and Technology. Washington: Association for Educational Communications and Technology, 1979.
MLA-Zitierstil (8. Ausg.)Não informado. Educational Communication and Technology. Association for Educational Communications and Technology, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.