Cite

Spain and Portugal [cartographic material] : special strategic map.

MLA

Service, United States. Army Map. Spain and Portugal [Cartographic Material] : Special Strategic Map. 1943. https://collections.library.yale.edu/catalog/15487318.

APA, 6th edition

Service, U. S. A. M. (1943). Spain and Portugal [cartographic material] : special strategic map. [Maps]. https://collections.library.yale.edu/catalog/15487318.