Alvarez, H. T. (2003). DENR's new order a major setback vs RP's anti-air pollution drive. Philippine Star.
Citazione stile Chigago Style (17a edizione)Alvarez, Heherson T. "DENR's New Order a Major Setback Vs RP's Anti-air Pollution Drive." Philippine Star 2003.
Citatione MLA (9a ed.)Alvarez, Heherson T. "DENR's New Order a Major Setback Vs RP's Anti-air Pollution Drive." Philippine Star, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.