(2011). Dennis Graef: Works 2006/2010. Eigenverl..
Cita Chicago (17th ed.)Dennis Graef: Works 2006/2010. [S.l.]: Eigenverl., 2011.
Cita MLA (8th ed.)Dennis Graef: Works 2006/2010. Eigenverl., 2011.
Atenció: Aquestes cites poden no estar 100% correctes.