APA (7th ed.) Citation

Barbers, J. (1938). Biologische Fibel: 1 Biologisches ABC. Biologische Fibel.

Chicago Style (17th ed.) Citation

Barbers, Josef. "Biologische Fibel: 1 Biologisches ABC." Biologische Fibel 1938.

MLA (8th ed.) Citation

Barbers, Josef. "Biologische Fibel: 1 Biologisches ABC." Biologische Fibel, 1938.

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