MLA

of Strategic Services. Research, United States. Office, and Analysis Branch. Korea (Including Quelpart and Tsushima) : Roads and Railroads / R & A, OSS. Reproduction Branch, OSS, 1945. https://collections.library.yale.edu/catalog/15511667.

APA, 6th edition

of Strategic Services. Research, U. S. O., & Branch, A. (1945). Korea (including Quelpart and Tsushima) : roads and railroads / R & A, OSS. [Maps]. Reproduction Branch, OSS, https://collections.library.yale.edu/catalog/15511667.