MLA

of Strategic Services. Research, United States. Office, and Analysis Branch. Germany Western Border Regions : Rail Traffic Volume (Excluding Inter Ruhr Traffic) Summer 1939. [Office of Strategic Services], 1945. https://collections.library.yale.edu/catalog/15479694.

APA, 6th edition

of Strategic Services. Research, U. S. O., & Branch, A. (1945). Germany western border regions : rail traffic volume (excluding inter Ruhr traffic) summer 1939. [Maps]. [Office of Strategic Services], https://collections.library.yale.edu/catalog/15479694.