Utley, P. L. (1979). Siegfried Bernfeld's Jewish order of youth, 1914-1922. Year Book / Leo Baeck Institute.
Lua i Stíl Chicago (17ú heag.)Utley, Philip L. "Siegfried Bernfeld's Jewish Order of Youth, 1914-1922." Year Book / Leo Baeck Institute 1979.
Lua MLA (8ú heag.)Utley, Philip L. "Siegfried Bernfeld's Jewish Order of Youth, 1914-1922." Year Book / Leo Baeck Institute, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.