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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines. Department of Public Works and Highways और Patricia Ann V. Cantero. Public Works at 110: Service Solid & Strong. [Manila: Department of Public Works and Highways, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines. Department of Public Works and Highways और Patricia Ann V. Cantero. Public Works at 110: Service Solid & Strong. Department of Public Works and Highways, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.