Bischoff, U. (1998). Johan Lorbeer: Performances.
Cita Chicago (17th ed.)Bischoff, Ulrich. Johan Lorbeer: Performances. Berlin, 1998.
Cita MLA (8th ed.)Bischoff, Ulrich. Johan Lorbeer: Performances. 1998.
Atenció: Aquestes cites poden no estar 100% correctes.