APA (7th ed.) Citation

Christaller, H. (1931). Albert Schweitzer. Acker-Verl.

Chicago Style (17th ed.) Citation

Christaller, Helene. Albert Schweitzer. Berlin: Acker-Verl, 1931.

MLA (9th ed.) Citation

Christaller, Helene. Albert Schweitzer. Acker-Verl, 1931.

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