Penna, J. A. (1997). Student's solutions manual [for] Algebra and trigonometry (2nd ed.). Addison-Wesley.
Citace podle Chicago (17th ed.)Penna, Judith A. Student's Solutions Manual [for] Algebra and Trigonometry. 2nd ed. Reading, Mass: Addison-Wesley, 1997.
Citace podle MLA (9th ed.)Penna, Judith A. Student's Solutions Manual [for] Algebra and Trigonometry. 2nd ed. Addison-Wesley, 1997.
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