Cita APA

National Geographic Society. Cartographic Department, & National Geographic Society. Cartographic Department. (1925). The Arctic regions. Washington: [editor no identificado].

Citación estilo Chicago

National Geographic Society. Cartographic Department, y National Geographic Society. Cartographic Department. The Arctic Regions. Washington: [editor no identificado], 1925.

Cita MLA

National Geographic Society. Cartographic Department, y National Geographic Society. Cartographic Department. The Arctic Regions. Washington: [editor no identificado], 1925.