Não informado. (1966). Educational Technology. Educational Technology Publications.
Chicago-Zitierstil (17. Ausg.)Não informado. Educational Technology. Englewood, NJ: Educational Technology Publications, 1966.
MLA-Zitierstil (8. Ausg.)Não informado. Educational Technology. Educational Technology Publications, 1966.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.