Helfand, J. I. (1984). The symbiotic relationship between French and German Jewry in the age of emancipation. Year Book / Leo Baeck Institute.
Lua i Stíl Chicago (17ú heag.)Helfand, Jonathan I. "The Symbiotic Relationship Between French and German Jewry in the Age of Emancipation." Year Book / Leo Baeck Institute 1984.
Lua MLA (8ú heag.)Helfand, Jonathan I. "The Symbiotic Relationship Between French and German Jewry in the Age of Emancipation." Year Book / Leo Baeck Institute, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.