Não informado. (1936). The Journal of Symbolic Logic. Association for Symbolic Logic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The Journal of Symbolic Logic. Pasadena, Calif: Association for Symbolic Logic, 1936.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The Journal of Symbolic Logic. Association for Symbolic Logic, 1936.
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