Nanney, J. Louis
Trigonometry : a skills approach, lecture version
Allyn and Bacon, 1980
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Nanney, J. Louis
Algebra and trigonometry: a skills approach
Allyn and Bacon, 1980
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Kuechle, Richard T.
Trigonometry : a New approach
Wadsworth, 1984
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Dwyer, David
College algebra and trigonometry : a contemporary approach
Brooks/Cole, 2000
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Precalculus: a make it real approach
Frank C. Wilson, Scott L. Adamson, Trey Cox, Alan E.O'Briyan
Cengage learning, 2013
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