APA (7th ed.) Citation

Sanders, H., & Sanders, J. (1973). Harms-Arbeitsmodelle Geographie. List.

Chicago Style (17th ed.) Citation

Sanders, Helmut, and Johann Sanders. Harms-Arbeitsmodelle Geographie. München [u.a.]: List, 1973.

MLA (9th ed.) Citation

Sanders, Helmut, and Johann Sanders. Harms-Arbeitsmodelle Geographie. List, 1973.