Aufmann, Richard N. College algebra / Richard N. Aufmann, Vernon C. Barker, Richard D. Nation. - 7th ed. - Andover : Cengage Learning, c2012. - xviii, 537 + p. : ill. Includes index. ISBN: 978-981-4416-36-8 Subjects--Topical Terms: Algebra. Dewey Class. No.: 512.9 A918 2012