Não informado. (2001). Studies in philosophy and education. Kluwer Academic Publishers.
Chicago-Zitierstil (17. Ausg.)Não informado. Studies in Philosophy and Education. Dordrecht, Holanda: Kluwer Academic Publishers, 2001.
MLA-Zitierstil (8. Ausg.)Não informado. Studies in Philosophy and Education. Kluwer Academic Publishers, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.