Cita APA (7th ed.)

Kerckhoff, S. (1948). Berliner Briefe. Wedding-Verl..

Cita Chicago (17th ed.)

Kerckhoff, Susanne. Berliner Briefe. Berlin: Wedding-Verl., 1948.

Cita MLA (8th ed.)

Kerckhoff, Susanne. Berliner Briefe. Wedding-Verl., 1948.