Lagasca, C. (2012). Mercury contamination threatens Chico River. Philippine Star.
Cita Chicago (17th ed.)Lagasca, Charlie. "Mercury Contamination Threatens Chico River." Philippine Star 2012.
Cita MLA (9th ed.)Lagasca, Charlie. "Mercury Contamination Threatens Chico River." Philippine Star, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.