HOWLETT, J. (2013). progressive education: :a critical introduction. Bloomsbury Aademic.
Lua i Stíl Chicago (17ú heag.)HOWLETT, John. Progressive Education: :a Critical Introduction. Bloomsbury Aademic, 2013.
Lua MLA (9ú heag.)HOWLETT, John. Progressive Education: :a Critical Introduction. Bloomsbury Aademic, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.