APA-referens (7:e uppl.)

Philippines. Department of Public Works and Highways & Cantero, P. A. V. (2008). Public Works at 110: Service solid & strong. Department of Public Works and Highways.

Chicago-referens (17:e uppl.)

Philippines. Department of Public Works and Highways och Patricia Ann V. Cantero. Public Works at 110: Service Solid & Strong. [Manila: Department of Public Works and Highways, 2008.

MLA-referens (9:e uppl.)

Philippines. Department of Public Works and Highways och Patricia Ann V. Cantero. Public Works at 110: Service Solid & Strong. Department of Public Works and Highways, 2008.