Borja, C., & Fontanilla, R. S. (2002). Otis-Lennon school ability test advanced form r. University of the Philippines Diliman Extension Program in Pampanga.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBorja, Carmela, और Rochelle S. Fontanilla. Otis-Lennon School Ability Test Advanced Form R. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBorja, Carmela, और Rochelle S. Fontanilla. Otis-Lennon School Ability Test Advanced Form R. University of the Philippines Diliman Extension Program in Pampanga, 2002.
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