Science and Technology Information Institute (Philippines). Philippine inventions. Science and Technology Information Institute, Dept. of Science and Technology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScience and Technology Information Institute (Philippines). Philippine Inventions. Manila, Philippines: Science and Technology Information Institute, Dept. of Science and Technology.
एमएलए (8वां संस्करण) प्रशस्ति पत्रScience and Technology Information Institute (Philippines). Philippine Inventions. Science and Technology Information Institute, Dept. of Science and Technology.
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