Greenberg, D. (1973). "Announcing a new school.": A personal account of the beginnings of the Sudbury Valley School. Sudbury Valley School Press.
Lua i Stíl Chicago (17ú heag.)Greenberg, Daniel. "Announcing a New School.": A Personal Account of the Beginnings of the Sudbury Valley School. Framingham, Mass.: Sudbury Valley School Press, 1973.
Lua MLA (8ú heag.)Greenberg, Daniel. "Announcing a New School.": A Personal Account of the Beginnings of the Sudbury Valley School. Sudbury Valley School Press, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.