MLA

of Strategic Services. Research, United States. Office, and Analysis Branch. Austria: International Transportation and Communication Network [Cartographic Material] / R & A, OSS. Reproduction Branch, OSS, 1945. https://collections.library.yale.edu/catalog/15497839.

APA, 6th edition

of Strategic Services. Research, U. S. O., & Branch, A. (1945). Austria: international transportation and communication network [cartographic material] / R & A, OSS. [Maps]. Reproduction Branch, OSS, https://collections.library.yale.edu/catalog/15497839.