Philippines. Regional Land Use Committee. (1994). Regional physical framework plan, 1993-2022: Region I. Regional Land Use Committee, Regional Development Council : National Economic and Development Authority, Region I.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines. Regional Land Use Committee. Regional Physical Framework Plan, 1993-2022: Region I. [Manila]: Regional Land Use Committee, Regional Development Council : National Economic and Development Authority, Region I, 1994.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPhilippines. Regional Land Use Committee. Regional Physical Framework Plan, 1993-2022: Region I. Regional Land Use Committee, Regional Development Council : National Economic and Development Authority, Region I, 1994.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.