APA (7th ed.) Citation

Groddek, D., Rößle, S., & Groddek, D. (2004). Bibliographie E.O. Forrers.

Chicago Style (17th ed.) Citation

Groddek, Detlev, Sylvester Rößle, and D. Groddek. Bibliographie E.O. Forrers. 2004.

MLA (8th ed.) Citation

Groddek, Detlev, et al. Bibliographie E.O. Forrers. 2004.