APA (7th ed.) Citation

Keller, T. (1921). Über Nasenrachenfibrome.

Chicago Style (17th ed.) Citation

Keller, Theodor. Über Nasenrachenfibrome. 1921.

MLA (8th ed.) Citation

Keller, Theodor. Über Nasenrachenfibrome. 1921.

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