Cita APA (7a ed.)

Göbel, ., Riemer, ., & Frank,. (1969). Harms Atlas Mannheim. List.

Cita Chicago Style (17a ed.)

Göbel, , Riemer, y Frank. Harms Atlas Mannheim. München [u.a.]: List, 1969.

Cita MLA (9a ed.)

Göbel, , et al. Harms Atlas Mannheim. List, 1969.