Kellermann, B. Dietegen. Rütten & Loening.
Cita Chicago (17th ed.)Kellermann, Bernhard. Dietegen. Potsdam: Rütten & Loening.
Cita MLA (8th ed.)Kellermann, Bernhard. Dietegen. Rütten & Loening.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)