Science Education Center, U. o. t. P. (1972). Elementary school mathematics 1. Science Education Center, University of the Philippines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScience Education Center, University of the Philippines. Elementary School Mathematics 1. Quezon City: Science Education Center, University of the Philippines, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रScience Education Center, University of the Philippines. Elementary School Mathematics 1. Science Education Center, University of the Philippines, 1972.
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