Bloch, E. D. (2011). Proofs and fundamentals: A first course in abstract mathematics (Second edition.). Springer.
Lua i Stíl Chicago (17ú heag.)Bloch, Ethan D. Proofs and Fundamentals: A First Course in Abstract Mathematics. Second edition. New York: Springer, 2011.
Lua MLA (9ú heag.)Bloch, Ethan D. Proofs and Fundamentals: A First Course in Abstract Mathematics. Second edition. Springer, 2011.
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