Benn, G. (1986). Briefe: Gottfried Benn. Klett-Cotta.
Cita Chicago (17th ed.)Benn, Gottfried. Briefe: Gottfried Benn. Stuttgart: Klett-Cotta, 1986.
Cita MLA (8th ed.)Benn, Gottfried. Briefe: Gottfried Benn. Klett-Cotta, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.