Davis, Marsha J.
Precalculus in context: projects for the real world
Brooks/Cole Publishing, 1998
 Buku Teks SO
Huettenmueller, Rhonda
Precalculus demystified
McGraw-Hill, 2012
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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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Swokowski, Earl W.
Precalculus : functions and graphs
Brooks/Cole, 2012
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Barnett, Raymond A.
Precalculus : functions and graphs
McGraw-HIll, 2001
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