Romero, P. (2010). What makes an environmentalist president. Philippine Star.
Cita Chicago (17th ed.)Romero, Purple. "What Makes an Environmentalist President." Philippine Star 2010.
Cita MLA (9th ed.)Romero, Purple. "What Makes an Environmentalist President." Philippine Star, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.