Yap, T. Iloilo dam, bridges at risk from excessive quarrying. IN Visayas News. Manila Bulletin.
Chicago-referens (17:e uppl.)Yap, Tara. "Iloilo Dam, Bridges at Risk from Excessive Quarrying. IN Visayas News." Manila Bulletin .
MLA-referens (9:e uppl.)Yap, Tara. "Iloilo Dam, Bridges at Risk from Excessive Quarrying. IN Visayas News." Manila Bulletin, .
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.