Havil, J. (2010). Nonplussed!: Mathematical proof of implausible ideas. Princeton University Press.
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Chicago-čujuhus (17. p.)
Havil, Julian. Nonplussed!: Mathematical Proof of Implausible Ideas. Princeton, N.J. ; Woodstock: Princeton University Press, 2010.
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MLA-čujuhus (9. p.)
Havil, Julian. Nonplussed!: Mathematical Proof of Implausible Ideas. Princeton University Press, 2010.
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