MLA

of State. Division of Map Intelligence, United States. Department, and Cartography. Germany, Zones of Occupation. Dept. of State, Division of Map Intelligence and Cartography, 1946. https://collections.library.yale.edu/catalog/15479648.

APA, 6th edition

of State. Division of Map Intelligence, U. S. D., & C. (1946). Germany, zones of occupation. [Maps]. Dept. of State, Division of Map Intelligence and Cartography, https://collections.library.yale.edu/catalog/15479648.