(1950). New grading system proposed for adoption in university. Philippine Collegian.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"New Grading System Proposed for Adoption in University." Philippine Collegian 1950.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"New Grading System Proposed for Adoption in University." Philippine Collegian, 1950.
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