Horton, Will The 30 power principles : a psychology of success / Thirty power principles Will Horto n - 1st - Chicago, IL : Wisdom books , 2007 - viii, 463 p. ; 24 cm. Includes bibliographical references (p. 445-450) and index. ISBN: 9781892274328 1892274329 (hb) Subjects--Topical Terms: SuccessPsychology of successPersonal wealth Dewey Class. No.: 650.1