MLA

of Strategic Services. Research, United States. Office, and Analysis Branch. Germany, Terrain & Selected Railroads / Compiled and Drawn in the Branch of Research and Analysis, OSS. Lithographed in the Reproduction Branch, OSS, 1943. https://collections.library.yale.edu/catalog/15479616.

APA, 6th edition

of Strategic Services. Research, U. S. O., & Branch, A. (1943). Germany, terrain & selected railroads / compiled and drawn in the Branch of Research and Analysis, OSS. [Physical maps]. Lithographed in the Reproduction Branch, OSS, https://collections.library.yale.edu/catalog/15479616.