Sobel, M. A. (1991). Precalculus mathematics (4th.ed.). Prentice Hall.
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Chicago Style (17th ed.) Citation
Sobel, Max A. Precalculus Mathematics. 4th.ed. Englewood Cliffs: Prentice Hall, 1991.
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MLA引文
Sobel, Max A. Precalculus Mathematics. 4th.ed. Prentice Hall, 1991.
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警告：這些引文格式不一定是100％准確.