Cita APA (7th ed.)

Lang, R. (1998). Erich Mühsam in Friedrichshagen.

Cita Chicago (17th ed.)

Lang, Rolf. Erich Mühsam in Friedrichshagen. Berlin, 1998.

Cita MLA (8th ed.)

Lang, Rolf. Erich Mühsam in Friedrichshagen. 1998.