Coburn, John W.
Precalculus
McGraw-Hill, 2010
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Barnett, Raymond A.
Precalculus : functions and graphs
McGraw-HIll, 2001
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Barnett, Raymond A.
Precalculus : function and graphs
2001
Multimedia
Heckenbach, Alan J.
Elementary functions : an approach to precalculus mathematics
Macmillan, 1970
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Saxena, Subhash Chandra
Introduction to real variable theory
Prentice Hall of India, 1980
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