Não informado. (1995). The Bulletin of symbolic logic. Association for Symbolic Logic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The Bulletin of Symbolic Logic. Champaign, Ill: Association for Symbolic Logic, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The Bulletin of Symbolic Logic. Association for Symbolic Logic, 1995.
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