MLA

of Strategic Services, United States. Office. Transport Facilities Linking Canada, Alaska, and Eastern Siberia : Board of Economic Warfare, Project No.EP-17, O.E.W.A. U.S. Office of Strategic Services, 1943. https://collections.library.yale.edu/catalog/15535378.

APA, 6th edition

of Strategic Services, U. S. O. (1943). Transport facilities linking Canada, Alaska, and Eastern Siberia : Board of Economic Warfare, Project No.EP-17, O.E.W.A. [Maps]. U.S. Office of Strategic Services, https://collections.library.yale.edu/catalog/15535378.