Citazione Stile APA (7a Edizione)

Philippines. Department of Public Works and Highways. (2009). Roads in the Philippines 2008. DPWH.

Citazione stile Chigago Style (17a edizione)

Philippines. Department of Public Works and Highways. Roads in the Philippines 2008. Manila: DPWH, 2009.

Citatione MLA (9a ed.)

Philippines. Department of Public Works and Highways. Roads in the Philippines 2008. DPWH, 2009.