APA (7th ed.) Citation

Ackerknecht, E. (1937). Gottfried Keller. Widukind-Verl.

Chicago Style (17th ed.) Citation

Ackerknecht, Erwin. Gottfried Keller. Berlin-Lichterfelde: Widukind-Verl, 1937.

MLA (9th ed.) Citation

Ackerknecht, Erwin. Gottfried Keller. Widukind-Verl, 1937.

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