Cita APA (7th ed.)

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.