Waerden, B. v. d. (1977). Algebra. Frederick Ungar Publ.
Lua i Stíl Chicago (17ú heag.)Waerden, B.L. van der. Algebra. Frederick Ungar Publ, 1977.
Lua MLA (8ú heag.)Waerden, B.L. van der. Algebra. Frederick Ungar Publ, 1977.
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