Orbeta, A. C. (2002). A review of research on population-related issues: 1980-2002. Philippine Institute for Development Studies.
Chicago-referens (17:e uppl.)Orbeta, Aniceto C. A Review of Research on Population-related Issues: 1980-2002. Makati City: Philippine Institute for Development Studies, 2002.
MLA-referens (9:e uppl.)Orbeta, Aniceto C. A Review of Research on Population-related Issues: 1980-2002. Philippine Institute for Development Studies, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.