Cohen, D. (1988). Algebra and Trigonometry (2nd ed.). West Publishing Company.
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Tohutoru Kātū Chicago (17th ed.)
Cohen, David. Algebra and Trigonometry. 2nd ed. New York: West Publishing Company, 1988.
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Tohutoro MLA (9th ed.)
Cohen, David. Algebra and Trigonometry. 2nd ed. West Publishing Company, 1988.
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