De La Salle university. Department of Philosophy. (1981). Sophia, 1971-1981. Department of Philosophy, De La Salle University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDe La Salle university. Department of Philosophy. Sophia, 1971-1981. Manila: Department of Philosophy, De La Salle University, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDe La Salle university. Department of Philosophy. Sophia, 1971-1981. Department of Philosophy, De La Salle University, 1981.
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