College algebra / Richard N. Aufmann, Vernon C. Barker, Richard D. Nation. - 7th ed. - Belmont, Calif. : Cengage Learning-Brooks/Cole, 2011. - xviii,660 (various Paging): ill. (some col.) ; 26 cm. Includes index. ISBN: 9781439049365(hbk.) 143904936 (hbk.) LCCN: 2009938509 Subjects--Topical Terms: Algebra. LC Class. No.: QA154.3 / .A837 2011