APA (7th ed.) Citation

Harder, H., Teyssen, S., & Singer, M. V. (2011). Ösophagus. Alkohol und Tabak.

Chicago Style (17th ed.) Citation

Harder, Hermann, Stephan Teyssen, and Manfred V. Singer. "Ösophagus." Alkohol Und Tabak 2011.

MLA (9th ed.) Citation

Harder, Hermann, et al. "Ösophagus." Alkohol Und Tabak, 2011.

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