Velleman Daniel J. (2023). How to prove it: A structured approach (3rd ed. Ver.3.). Cambridge University Press.
Cita Chicago Style (17a ed.)Velleman Daniel J. How to Prove It: A Structured Approach. 3rd ed. Ver.3. UK: Cambridge University Press, 2023.
Cita MLA (9a ed.)Velleman Daniel J. How to Prove It: A Structured Approach. 3rd ed. Ver.3. Cambridge University Press, 2023.
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