Cita APA (7th ed.)

Paul, J., & Berend, E. (1987). Briefe 1820-1825. Böhlau.

Cita Chicago (17th ed.)

Paul, Jean, i Eduard Berend. Briefe 1820-1825. Weimar: Böhlau, 1987.

Cita MLA (8th ed.)

Paul, Jean, i Eduard Berend. Briefe 1820-1825. Böhlau, 1987.