Railways of "Greater Germany" / compiled and drawn in the Branch of Research and Analysis, OSS.
MLA
of Strategic Services. Research, United States. Office, and Analysis Branch. Railways of "Greater Germany" / Compiled and Drawn in the Branch of Research and Analysis, OSS. OSS, 1943. https://collections.library.yale.edu/catalog/15479688.
APA, 6th edition
of Strategic Services. Research, U. S. O., & Branch, A. (1943). Railways of "Greater Germany" / compiled and drawn in the Branch of Research and Analysis, OSS. [Maps]. OSS, https://collections.library.yale.edu/catalog/15479688.