Ries, Al. Positioning : the battle for your mind / Al Ries, Jack Trout. - New York : McGraw-Hill, 2001. - x, 213 p. ; 21 cm. Includes index. ISBN: 0071373586 : SR44.00 Subjects--Topical Terms: Advertising,Positioning(Advertising).Marketing--Management. Dewey Class. No.: 659.1 / R445 2001