Norden, L. (2001). Passive Ausdruckskraft. Parkett.
Cita Chicago (17th ed.)Norden, Linda. "Passive Ausdruckskraft." Parkett 2001.
Cita MLA (8th ed.)Norden, Linda. "Passive Ausdruckskraft." Parkett, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.