MLA

of Strategic Services. Research, United States. Office, and Analysis Branch. Lesser Sunda Islands Administrative Divisions / R & A, O.S.S. Office of Strategic Services, 1945. https://collections.library.yale.edu/catalog/15238539.

APA, 6th edition

of Strategic Services. Research, U. S. O., & Branch, A. (1945). Lesser Sunda Islands administrative divisions / R & A, O.S.S. [Maps]. Office of Strategic Services, https://collections.library.yale.edu/catalog/15238539.