MLA

of Economic Warfare. Enemy Branch, United States. Board. Far East, Japanese Occupied Area, Major Railroads [Cartographic Material] / Board of Economic Warfare, Enemy Branch ; Drawn in R. and A., OSS. Office of Strategic Services], 1943. https://collections.library.yale.edu/catalog/15510568.

APA, 6th edition

of Economic Warfare. Enemy Branch, U. S. B. (1943). Far East, Japanese occupied area, major railroads [cartographic material] / Board of Economic Warfare, Enemy Branch ; drawn in R. and A., OSS. [Maps]. Office of Strategic Services], https://collections.library.yale.edu/catalog/15510568.