Battle, J.A.
The new idea in education / J.A. Battle and Robert L. Shannon
Harper & Row , 1968
 Buku Teks
Studies in education from the department of education of The State University of Iowa
edited by Frederick Elmer Bolton
Iowa State University Press, 1912
 Buku Klasik
Tooley, James
Reclaiming education
Continuum Studies Education Policy, 2000
 Buku Teks
Education yearbook 1985
edited by Susan Higgins, Meta Brett
Longman, 1984
 Buku Referensi
The Global network of Soka Education
Shinano new video library,
 Multimedia