AAF cloth chart [cartographic material] : no. C40, Luzon Island / Army Map Service U.S. Army.
MLA
Forces, United States. Army Air. AAF Cloth Chart [Cartographic Material] : No. C40, Luzon Island / Army Map Service U.S. Army. Army Map Service, 1944. https://collections.library.yale.edu/catalog/15502121.
APA, 6th edition
Forces, U. S. A. A. (1944). AAF cloth chart [cartographic material] : no. C40, Luzon Island / Army Map Service U.S. Army. [Military maps]. Army Map Service, https://collections.library.yale.edu/catalog/15502121.