MLA

Section, Great Britain. War Office. General Staff. Geographical. China and Japan [Cartographic Material] / Compiled from G.S.G.S. 4065 and 2957. Army Map Service, U.S. Army, 1943. https://collections.library.yale.edu/catalog/15510615.

APA, 6th edition

Section, G. B. W. O. G. S. G. (1943). China and Japan [cartographic material] / compiled from G.S.G.S. 4065 and 2957. [Topographic maps]. Army Map Service, U.S. Army, https://collections.library.yale.edu/catalog/15510615.