SPRING, J. H. (2011). The American school: A global context from the puritans to the Obama era. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)SPRING, Joel H. The American School: A Global Context from the Puritans to the Obama Era. McGraw-Hill Book Company, 2011.
Lua MLA (9ú heag.)SPRING, Joel H. The American School: A Global Context from the Puritans to the Obama Era. McGraw-Hill Book Company, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.