National Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, volume XIII. NAST.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, Volume XIII. Taguig, Metro Manila: NAST.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, Volume XIII. NAST.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.