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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAko. Quezon City: Office of the Vice-Chancellor for Research and Development, Office of the Vice-Chancellor for Academic Affairs, Departamento ng Filipino at Panitikan ng Pilipinas, University of the Philippines, Diliman, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAko. Office of the Vice-Chancellor for Research and Development, Office of the Vice-Chancellor for Academic Affairs, Departamento ng Filipino at Panitikan ng Pilipinas, University of the Philippines, Diliman, 1999.
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