Sieverding, K. (1993). Katharina Sieverding.
Cita Chicago (17th ed.)Sieverding, Katharina. Katharina Sieverding. Regensburg, 1993.
Cita MLA (8th ed.)Sieverding, Katharina. Katharina Sieverding. 1993.
Atenció: Aquestes cites poden no estar 100% correctes.