Swokowski, E. W. (1968). Fundamentals of algebra and trigonometry. Prindle, Weber and Schmidt.
Lua i Stíl Chicago (17ú heag.)Swokowski, Earl William. Fundamentals of Algebra and Trigonometry. Boston: Prindle, Weber and Schmidt, 1968.
Lua MLA (9ú heag.)Swokowski, Earl William. Fundamentals of Algebra and Trigonometry. Prindle, Weber and Schmidt, 1968.
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