APA (7e ed.) Bronvermelding

Lindberg, L. (1954). The democratic classroom: A guide for teachers. Bureau of Publications, Teachers College, Columbia Univerity.

Chicago (17e ed.) Bronvermelding

Lindberg, Lucile. The Democratic Classroom: A Guide for Teachers. New York: Bureau of Publications, Teachers College, Columbia Univerity, 1954.

MLA (9e ed.) Bronvermelding

Lindberg, Lucile. The Democratic Classroom: A Guide for Teachers. Bureau of Publications, Teachers College, Columbia Univerity, 1954.