Unioversity of the Philippines. College of Arts and Letters. Department of Philosophy. (1981). Readings in philosophy (Second edition.). College of Arts and Letters, University of the Philippines System.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnioversity of the Philippines. College of Arts and Letters. Department of Philosophy. Readings in Philosophy. Second edition. Quezon City: College of Arts and Letters, University of the Philippines System, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnioversity of the Philippines. College of Arts and Letters. Department of Philosophy. Readings in Philosophy. Second edition. College of Arts and Letters, University of the Philippines System, 1981.
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