Niven, I. (1961). Numbers: Rational and irrational. Mathematical Association of America.
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Chicago-čujuhus (17. p.)
Niven, Ivan. Numbers: Rational and Irrational. Washington, DC: Mathematical Association of America, 1961.
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MLA-čujuhus (9. p.)
Niven, Ivan. Numbers: Rational and Irrational. Mathematical Association of America, 1961.
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