APA (7th ed.) Citation

Sanders, J., & Sanders, H. (1978). Harms-Arbeitsmappe - Erdkunde. List.

Chicago Style (17th ed.) Citation

Sanders, Johann, and Helmut Sanders. Harms-Arbeitsmappe - Erdkunde. München [u.a.]: List, 1978.

MLA (9th ed.) Citation

Sanders, Johann, and Helmut Sanders. Harms-Arbeitsmappe - Erdkunde. List, 1978.