Cita APA (7a ed.)

Ruge, A. (1847). Polemische Briefe. [s.n.].

Cita Chicago Style (17a ed.)

Ruge, Arnold. Polemische Briefe. Mannheim: [s.n.], 1847.

Cita MLA (9a ed.)

Ruge, Arnold. Polemische Briefe. [s.n.], 1847.