Functions Modeling Change: A Preparation for Calculus, 5th Edition Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C. Publisher Wiley ISBN 978-1-11858-319-7
Precalculus (6th Edition) Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie Publisher Pearson ISBN 978-0-13421-742-0
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition) Sullivan III, Michael Publisher Pearson ISBN 978-0-32193-104-7
Precalculus: Mathematics for Calculus, 7th Edition Stewart, James; Redlin, Lothar; Watson, Saleem Publisher Brooks Cole ISBN 978-1-30507-175-9