Citazione Stile APA (7a Edizione)

Sigua, R. G. (2008). Fundamentals of traffic engineering. University of the Philippines Press.

Citazione stile Chigago Style (17a edizione)

Sigua, Ricardo G. Fundamentals of Traffic Engineering. Quezon City: University of the Philippines Press, 2008.

Citatione MLA (9a ed.)

Sigua, Ricardo G. Fundamentals of Traffic Engineering. University of the Philippines Press, 2008.