Russell, B. (1956). Logic and knowledge: Essays 1901 - 1950. George Allen & Unwin.
Tohutoru Kātū Chicago (17th ed.)Russell, Bertrand. Logic and Knowledge: Essays 1901 - 1950. Londres: George Allen & Unwin, 1956.
Tohutoro MLA (9th ed.)Russell, Bertrand. Logic and Knowledge: Essays 1901 - 1950. George Allen & Unwin, 1956.
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