Não informado. (1967). Journal of research and development in education. University of Georgia, College of Education.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of Research and Development in Education. Athens, Ga: University of Georgia, College of Education, 1967.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of Research and Development in Education. University of Georgia, College of Education, 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.