Owsley, R. H. (1956). Philippine city charters with a suggested uniform charter law. Insitute of Public Administration, University of the Philippines.
Chicago-referens (17:e uppl.)Owsley, Roy Hamilton. Philippine City Charters with a Suggested Uniform Charter Law. Manila: Insitute of Public Administration, University of the Philippines, 1956.
MLA-referens (9:e uppl.)Owsley, Roy Hamilton. Philippine City Charters with a Suggested Uniform Charter Law. Insitute of Public Administration, University of the Philippines, 1956.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.