Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Lang, Rolf. Erich Mühsam in Friedrichshagen. 1998.