APA (7th ed.) Citation

Tetzner, C., Tetzner, H. 1. I., & Hesse, H. (2004). Frierende. Klartext.

Chicago Style (17th ed.) Citation

Tetzner, Charlotte, Heinz 1920-2007 Ill Tetzner, and Hans Hesse. Frierende. Essen: Klartext, 2004.

MLA (8th ed.) Citation

Tetzner, Charlotte, et al. Frierende. Klartext, 2004.