Burton, D. M. (2011). Elementary number theory (7th ed.). McGraw-Hill, Higher Education.
Lua i Stíl Chicago (17ú heag.)Burton, David M. Elementary Number Theory. 7th ed. Boston: McGraw-Hill, Higher Education, 2011.
Lua MLA (8ú heag.)Burton, David M. Elementary Number Theory. 7th ed. McGraw-Hill, Higher Education, 2011.
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