Eyck, F. (1992). A diarist in fin-de-siècle Berlin and her family: Helene, Joseph and Erich Eyck. Year Book / Leo Baeck Institute.
Lua i Stíl Chicago (17ú heag.)Eyck, Frank. "A Diarist in Fin-de-siècle Berlin and Her Family: Helene, Joseph and Erich Eyck." Year Book / Leo Baeck Institute 1992.
Lua MLA (8ú heag.)Eyck, Frank. "A Diarist in Fin-de-siècle Berlin and Her Family: Helene, Joseph and Erich Eyck." Year Book / Leo Baeck Institute, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.