Philippines. National Statistics Office. (1999). Ranking of provinces for selected poverty indicators. NSO.
Chicago-referens (17:e uppl.)Philippines. National Statistics Office. Ranking of Provinces for Selected Poverty Indicators. Manila: NSO, 1999.
MLA-referens (9:e uppl.)Philippines. National Statistics Office. Ranking of Provinces for Selected Poverty Indicators. NSO, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.