APA (7th ed.) Citation

Knopp, G., & Knopp, G. M. (2011). Freude am Töten? ZDF.

Chicago Style (17th ed.) Citation

Knopp, Guido, and Guido Mitarb Knopp. Freude Am Töten? ZDF, 2011.

MLA (8th ed.) Citation

Knopp, Guido, and Guido Mitarb Knopp. Freude Am Töten? ZDF, 2011.

Warning: These citations may not always be 100% accurate.