Não informado. (1972). Bulletin of the Section of Logic. Polish Academy of Sciences, Institute of Philosophy and Sociology.
Citace podle Chicago (17th ed.)Não informado. Bulletin of the Section of Logic. Warszawa: Polish Academy of Sciences, Institute of Philosophy and Sociology, 1972.
Citace podle MLA (8th ed.)Não informado. Bulletin of the Section of Logic. Polish Academy of Sciences, Institute of Philosophy and Sociology, 1972.
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