APA-referens (7:e uppl.)

Philippine Islands. Executive Bureau. (1977). Annual report of the executive secretary [microform]. Photoduplication Service, University of the Philippines Library.

Chicago-referens (17:e uppl.)

Philippine Islands. Executive Bureau. Annual Report of the Executive Secretary [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.

MLA-referens (9:e uppl.)

Philippine Islands. Executive Bureau. Annual Report of the Executive Secretary [microform]. Photoduplication Service, University of the Philippines Library, 1977.

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