Johnson, D. A., & Glenn, W. H. (1963). Logic and reasoning in mathematics. John Murray.
Lua i Stíl Chicago (17ú heag.)Johnson, Donovan A., agus W. H. Glenn. Logic and Reasoning in Mathematics. London: John Murray, 1963.
Lua MLA (9ú heag.)Johnson, Donovan A., agus W. H. Glenn. Logic and Reasoning in Mathematics. John Murray, 1963.
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