Não informado. University of Iowa studies in education. University of Iowa, College of Education.
Chicago-Zitierstil (17. Ausg.)Não informado. University of Iowa Studies in Education. Iowa City, Iowa: University of Iowa, College of Education.
MLA-Zitierstil (8. Ausg.)Não informado. University of Iowa Studies in Education. University of Iowa, College of Education.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.