(2000). Provincial physical framework plan: Comprehensive provincial land use plan, province of Apayao, planning period 1996-2002. Province of Apayao Provincial Development Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रProvincial Physical Framework Plan: Comprehensive Provincial Land Use Plan, Province of Apayao, Planning Period 1996-2002. Apayao: Province of Apayao Provincial Development Council, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रProvincial Physical Framework Plan: Comprehensive Provincial Land Use Plan, Province of Apayao, Planning Period 1996-2002. Province of Apayao Provincial Development Council, 2000.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.