Sigua, R. G. (2000). The state of road safety in the Philippines. Public Policy.
Cita Chicago Style (17a ed.)Sigua, Ricardo G. "The State of Road Safety in the Philippines." Public Policy 2000.
Cita MLA (9a ed.)Sigua, Ricardo G. "The State of Road Safety in the Philippines." Public Policy, 2000.
Precaución: Estas citas no son 100% exactas.