Leadership : enhancing the lessons of experience / Richard L. Hughes, Robert C. Ginnett, Gordon J. Curphy. Hughes, Richard L. Ginnett, Robert C. Curphy, Gordon J. Leadership. HM1261 .H84 2012 303.34 22 HUL Includes bibliographical references and indexes. New York : McGraw-Hill Irwin, c2012. c2012. 2012 Text xviii, 716 p. : eng