APA (7th ed.) Citation

Bitterling, R., Otto, T., Fischer, H., & Geistbeck, M. (1938). Erdkunde. Buchner.

Chicago Style (17th ed.) Citation

Bitterling, Richard, Theodor Otto, Heinrich Fischer, and Michael Geistbeck. Erdkunde. Bamberg: Buchner, 1938.

MLA (8th ed.) Citation

Bitterling, Richard, et al. Erdkunde. Buchner, 1938.