Flieger, W., Koppin, B., & Lim, C. (1976). Geographical patterns of internal migration in the Philippines: 1960-1970. National Census and Statistics Office.
Chicago-referens (17:e uppl.)Flieger, Wilhelm, Brigida Koppin, och Carmencita Lim. Geographical Patterns of Internal Migration in the Philippines: 1960-1970. Manila: National Census and Statistics Office, 1976.
MLA-referens (9:e uppl.)Flieger, Wilhelm, et al. Geographical Patterns of Internal Migration in the Philippines: 1960-1970. National Census and Statistics Office, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.