Trigonometry (10th Edition) Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie Publisher Pearson ISBN 978-0-32167-177-6
Trigonometry (11th Edition) Clone Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie Publisher Pearson ISBN 978-0-13421-743-7
Trigonometry 7th Edition McKeague, Charles P.; Turner, Mark D. Publisher Cengage Learning ISBN 978-1-11182-685-7
