Cohen, D. (1993). Algebra and trigonometry (3rd ed.). West Pub. Co..
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Chicago-čujuhus (17. p.)
Cohen, David. Algebra and Trigonometry. 3rd ed. Minneapolis/St. Paul: West Pub. Co., 1993.
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MLA-čujuhus (9. p.)
Cohen, David. Algebra and Trigonometry. 3rd ed. West Pub. Co., 1993.
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