Staver, Michael. Leadership isn't for cowards : how to drive performance by challenging people and confronting problems / Mike Staver. - Hoboken, N.J. : Wiley, 2012. - ix, 230 p. ; 24 cm. Includes index. ISBN: 9781118176832 RM59.93 1118176839 Subjects--Topical Terms: Leadership.Performance--Management.