^Ratcliffe, Barrie M. (1975). "Crisis and Identity: Gustave d'Eichthal and Judaism in the Emancipation Period". Jewish Social Studies. 37 (2): 122–140. JSTOR4466874.
^Genealogisches Handbuch des Adels. Adelslexikon. Vol. 61. Limburg (Lahn): C. A. Starke Verlag. 1975. p. 106.