Barnett, Raymond A. creator Ziegler, Michael R. Byleen, Karl E. text Boston McGraw-Hill c2001 7th ed. / monographic 909p ill. (some col.) ; Includes indexes. Algebra Trigonometry 512.13 BAR 0072368691 (acidfree paper) https://marinazahara22.wordpress.com/wp-content/uploads/2013/10/college_algebra_with_trigonometry.pdf http://www.loc.gov/catdir/enhancements/fy0702/00035142-d.html https://marinazahara22.wordpress.com/wp-content/uploads/2013/10/college_algebra_with_trigonometry.pdf http://www.loc.gov/catdir/enhancements/fy0702/00035142-d.html