Pangasinan. Eastern part.
MLA
of Strategic Services. Research, United States. Office, and Analysis Branch. Pangasinan. Eastern Part. 1945. https://collections.library.yale.edu/catalog/15238640.
APA, 6th edition
of Strategic Services. Research, U. S. O., & Branch, A. (1945). Pangasinan. Eastern part. [Maps]. https://collections.library.yale.edu/catalog/15238640.