Não informado. (2007). Learning resources. Association for Educational Communications and Technology.
Chicago-Zitierstil (17. Ausg.)Não informado. Learning Resources. Washington: Association for Educational Communications and Technology, 2007.
MLA-Zitierstil (8. Ausg.)Não informado. Learning Resources. Association for Educational Communications and Technology, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.