Cita APA (7a ed.)

Gregorovius, F. (1843). Konrad Siebenhorn's Höllenbriefe. [s.n.].

Cita Chicago Style (17a ed.)

Gregorovius, Ferdinand. Konrad Siebenhorn's Höllenbriefe. Königsberg: [s.n.], 1843.

Cita MLA (9a ed.)

Gregorovius, Ferdinand. Konrad Siebenhorn's Höllenbriefe. [s.n.], 1843.