Roxas, P. (2003). P20-B road project to link ecozones in Central Luzon. Manila Times.
Cita Chicago Style (17a ed.)Roxas, Patrick. "P20-B Road Project to Link Ecozones in Central Luzon." Manila Times 2003.
Cita MLA (9a ed.)Roxas, Patrick. "P20-B Road Project to Link Ecozones in Central Luzon." Manila Times, 2003.
Precaución: Estas citas no son 100% exactas.