SWOKOWSKI, E. W. (1981). Fundamentals of algebra and trigonometry.-- Ed. 5. Prindle.
Lua i Stíl Chicago (17ú heag.)SWOKOWSKI, Earl W. Fundamentals of Algebra and Trigonometry.-- Ed. 5. Boston: Prindle, 1981.
Lua MLA (9ú heag.)SWOKOWSKI, Earl W. Fundamentals of Algebra and Trigonometry.-- Ed. 5. Prindle, 1981.
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