Aufmann, Richard N. College trigonometry / Richard N. Aufmann, Vernon C. Barker, Richard D. Nation. - 4th ed. - Boston : Houghton Mifflin Co., c2002. - 1 v. (various pagings) : col. ill. ; 26 cm. Includes index. ISBN: 061813087X LCCN: 2001131470 Subjects--Topical Terms: Trigonometry. LC Class. No.: QA531 / .A87 2002 Dewey Class. No.: 516.24