APA (7th ed.) Citation

Karpa, G., Günther, E., & Trautmann, H. Schutzimpfung.

Chicago Style (17th ed.) Citation

Karpa, Günther, Erich Günther, and Hans Trautmann. Schutzimpfung.

MLA (9th ed.) Citation

Karpa, Günther, et al. Schutzimpfung.

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