Henning, A. (1989). Joseph Hillmer: Okulist, Professor, Scharlatan im friderizianischen Berlin / Aloys Henning. Eigeverl..
Citazione stile Chigago Style (17a edizione)Henning, Aloys. Joseph Hillmer: Okulist, Professor, Scharlatan Im Friderizianischen Berlin / Aloys Henning. Berlin: Eigeverl., 1989.
Citatione MLA (8a ed.)Henning, Aloys. Joseph Hillmer: Okulist, Professor, Scharlatan Im Friderizianischen Berlin / Aloys Henning. Eigeverl., 1989.
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