Webster, W. J. (1976). The evaluation of instructional materials. Association for Educational Communications and Technology.
Chicago-Zitierstil (17. Ausg.)Webster, William J. The Evaluation of Instructional Materials. Washington: Association for Educational Communications and Technology, 1976.
MLA-Zitierstil (8. Ausg.)Webster, William J. The Evaluation of Instructional Materials. Association for Educational Communications and Technology, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.