The Rand McNally war map of Central Europe.
MLA
McNally, Rand, and Company. The Rand McNally War Map of Central Europe. Rand McNally & Co., 0AD. https://collections.library.yale.edu/catalog/15258795.
APA, 6th edition
McNally, R., & C. (0 C.E.). The Rand McNally war map of Central Europe. [Maps]. Rand McNally & Co., https://collections.library.yale.edu/catalog/15258795.