MLA

Service, United States. Army Map. Cyprus [Cartographic Material] : Special Strategic Map -- Asia / Prepared under the Direction of the Chief of Engineers. Army Map Service, 1947. https://collections.library.yale.edu/catalog/15506340.

APA, 6th edition

Service, U. S. A. M. (1947). Cyprus [cartographic material] : special strategic map -- Asia / prepared under the direction of the chief of Engineers. [Maps]. Army Map Service, https://collections.library.yale.edu/catalog/15506340.