Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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