MLA

McNally, Rand, and Company. Rand McNally War Map. Rand McNally & Co., 0AD. https://collections.library.yale.edu/catalog/15238013.

APA, 6th edition

McNally, R., & C. (0 C.E.). Rand McNally war map. [Maps, Military maps]. Rand McNally & Co., https://collections.library.yale.edu/catalog/15238013.