 Precalculus by Judith A. Beecher, Judith A. Penna, et all 12 December, 2001
 Precalculus by Robert E. Blitzer, Robert F. Blitzer, 16 January, 2001
 Heath Algebra 1: An Integrated Approach by Roland E. Larson, Timothy D. Kanold, et all June, 1998
 Trigonometry by Charles Patrick McKeague, 03 August, 1998
 A Graphical Approach to Precalculus with Limits (3rd Edition) by E. John Hornsby, Margaret L. Lial, et all 25 October, 2002
 Trigonometric Series by A. Zygmund, March, 2003
 Schaum's Outline of Precalculus by Fred Safier, 01 October, 1997
 Trigonometry by Ron Larson, Robert P. Hostetler, 2001
 Algebra and Trigonometry With Analytic Geometry With Infotrac by Earl W. Swokowski, November, 2001
 Precalculus (2nd Edition) by Margaret L. Lial, John Hornsby, et all 08 November, 2000
