Lindberg, L. (1954). The democratic classroom: A guide for teachers. Bureau of Publications, Teachers College, Columbia Univerity.
Chicago-Zitierstil (17. Ausg.)Lindberg, Lucile. The Democratic Classroom: A Guide for Teachers. New York: Bureau of Publications, Teachers College, Columbia Univerity, 1954.
MLA-Zitierstil (9. Ausg.)Lindberg, Lucile. The Democratic Classroom: A Guide for Teachers. Bureau of Publications, Teachers College, Columbia Univerity, 1954.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.