Sigua, R. G. (2008). Fundamentals of traffic engineering. University of the Philippines Press.
Cita Chicago (17th ed.)Sigua, Ricardo G. Fundamentals of Traffic Engineering. Quezon City: University of the Philippines Press, 2008.
Cita MLA (9th ed.)Sigua, Ricardo G. Fundamentals of Traffic Engineering. University of the Philippines Press, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.