Cita APA (7th ed.)

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.