Harari, Oren The Powell principles : 24 lessons from Colin Powell, battle-proven leader / Oren Harari - New York : McGraw-Hill, 2005 - ix, 116 p. : ill. ; 22 cm. - McGraw-Hill professional education . Includes bibliographical references ISBN: 0071444904 RM47.14 Subjects--Personal Names: Powell, Colin L. Subjects--Topical Terms: Leadership