Não informado. (1980). Instructional innovator. Association for Educational Communications and Technology.
Chicago-Zitierstil (17. Ausg.)Não informado. Instructional Innovator. Washington: Association for Educational Communications and Technology, 1980.
MLA-Zitierstil (8. Ausg.)Não informado. Instructional Innovator. Association for Educational Communications and Technology, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.