Graduate school journal. Graduate School of the Catanduanes State Colleges.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGraduate School Journal. Virac, Catanduanes: Graduate School of the Catanduanes State Colleges.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGraduate School Journal. Graduate School of the Catanduanes State Colleges.
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