(2007). Sing Sang Song: Friedhilde Trüün. Carus.
Cita Chicago (17th ed.)Sing Sang Song: Friedhilde Trüün. Stuttgart: Carus, 2007.
Cita MLA (8th ed.)Sing Sang Song: Friedhilde Trüün. Carus, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.