APA (7th ed.) Citation

Gerhardt, D. (1913). Herzklappenfehler. Hölder.

Chicago Style (17th ed.) Citation

Gerhardt, Dietrich. Herzklappenfehler. Wien: Hölder, 1913.

MLA (9th ed.) Citation

Gerhardt, Dietrich. Herzklappenfehler. Hölder, 1913.

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