Russian maritime provinces [cartographic material] : special strategic map / prepared under the direction of the Chief of Engineers, U.S. Army.
MLA
Service, United States. Army Map. Russian Maritime Provinces [Cartographic Material] : Special Strategic Map / Prepared under the Direction of the Chief of Engineers, U.S. Army. Army Map Service, 0AD. https://collections.library.yale.edu/catalog/15509697.
APA, 6th edition
Service, U. S. A. M. (0 C.E.). Russian maritime provinces [cartographic material] : special strategic map / prepared under the direction of the Chief of Engineers, U.S. Army. [Maps]. Army Map Service, https://collections.library.yale.edu/catalog/15509697.