Cite

The Azores. Compiled and drawn at the War Office, 1942.

MLA

Section, Great Britain. War Office. General Staff. Geographical. The Azores. Compiled and Drawn at the War Office, 1942. Army Map Service, U.S. Army, 1942. https://collections.library.yale.edu/catalog/15249353.

APA, 6th edition

Section, G. B. W. O. G. S. G. (1942). The Azores. Compiled and drawn at the War Office, 1942. [Maps]. Army Map Service, U.S. Army, https://collections.library.yale.edu/catalog/15249353.