APA (7th ed.) Citation

Stengel, K., Berberich, K., & Dörr, E. (1948). Unsere Fibel. Beltz.

Chicago Style (17th ed.) Citation

Stengel, Karl, Karl Berberich, and Eugen Dörr. Unsere Fibel. Weinheim/Bergstr: Beltz, 1948.

MLA (9th ed.) Citation

Stengel, Karl, et al. Unsere Fibel. Beltz, 1948.