APA (7th ed.) Citation

Kopp, M., & Polac, S. (2001). Warum?: Susana Polacs Kreuzweg. NZN Buchverl.

Chicago Style (17th ed.) Citation

Kopp, Martin, and Susana Polac. Warum?: Susana Polacs Kreuzweg. Zürich: NZN Buchverl, 2001.

MLA (9th ed.) Citation

Kopp, Martin, and Susana Polac. Warum?: Susana Polacs Kreuzweg. NZN Buchverl, 2001.

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