Nidditch, P. (1957). Introductory formal logic of mathematics. University Tutorial Press Ltd.
Lua i Stíl Chicago (17ú heag.)Nidditch, P.H. Introductory Formal Logic of Mathematics. London: University Tutorial Press Ltd, 1957.
Lua MLA (9ú heag.)Nidditch, P.H. Introductory Formal Logic of Mathematics. University Tutorial Press Ltd, 1957.
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