Não informado. (1968). Contemporary education. Indiana University, School of Education.
Chicago-Zitierstil (17. Ausg.)Não informado. Contemporary Education. Terre Haute, Ind: Indiana University, School of Education, 1968.
MLA-Zitierstil (8. Ausg.)Não informado. Contemporary Education. Indiana University, School of Education, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.