APA (7th ed.) Citation

Sanders, J., & Sanders, H. (1964). Harms-Arbeitsmappen - Erdkunde. List.

Chicago Style (17th ed.) Citation

Sanders, Johann, and Helmut Sanders. Harms-Arbeitsmappen - Erdkunde. Frankfurt [u.a.]: List, 1964.

MLA (9th ed.) Citation

Sanders, Johann, and Helmut Sanders. Harms-Arbeitsmappen - Erdkunde. List, 1964.