Brubacher, J. S. (1947). A history of the problems of education. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)Brubacher, John Seiler. A History of the Problems of Education. New York and London: McGraw-Hill Book Company, 1947.
Lua MLA (9ú heag.)Brubacher, John Seiler. A History of the Problems of Education. McGraw-Hill Book Company, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.