Staeck, K., Staeck, K., & Steidl, G. (1989). Das erste Gift.
Chicago Style (17th ed.) CitationStaeck, Klaus, Klaus Staeck, and Göttingen Steidl. Das Erste Gift. 1989.
MLA (8th ed.) CitationStaeck, Klaus, et al. Das Erste Gift. 1989.
Warning: These citations may not always be 100% accurate.