Diederichs <Düsseldorf>. Almanach. Verl. Eugen Diederichs.
Cita Chicago (17th ed.)Diederichs <Düsseldorf>. Almanach. Jena: Verl. Eugen Diederichs.
Cita MLA (8th ed.)Diederichs <Düsseldorf>. Almanach. Verl. Eugen Diederichs.
Atenció: Aquestes cites poden no estar 100% correctes.