MLA

of Strategic Services. Research, United States. Office, and Analysis Branch. Batanes [Cartographic Material]. Reproduction Branch, OSS, 1945. https://collections.library.yale.edu/catalog/15238711.

APA, 6th edition

of Strategic Services. Research, U. S. O., & Branch, A. (1945). Batanes [cartographic material]. [Maps]. Reproduction Branch, OSS, https://collections.library.yale.edu/catalog/15238711.