Helfand, J. I. (1984). The symbiotic relationship between French and German Jewry in the age of emancipation. Year Book / Leo Baeck Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Helfand, Jonathan I. "The Symbiotic Relationship Between French and German Jewry in the Age of Emancipation." Year Book / Leo Baeck Institute 1984.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Helfand, Jonathan I. "The Symbiotic Relationship Between French and German Jewry in the Age of Emancipation." Year Book / Leo Baeck Institute, 1984.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.