APA (7th ed.) Citation

National Geographic Society. (1915). Map of Europe: And adjoining portions of Africa and Asia.

Chicago Style (17th ed.) Citation

National Geographic Society. Map of Europe: And Adjoining Portions of Africa and Asia. Buffalo, NY: Matthews-Northrup Works, 1915.

MLA (9th ed.) Citation

National Geographic Society. Map of Europe: And Adjoining Portions of Africa and Asia. 1915.