Adair, John Eric, 1934- Leadership and motivation : the fifty-fifty rule and the eight key principles of motivating others / John Adair. - Philadelphia : Kogan Page Limited, 2009. - vii, 135 p. ; ill. ; 22 cm. Includes bibliographical references and index. ISBN: 978-0-7494-5482-1 Subjects--Topical Terms: Leadership.Motivation (Psychology)Employee motivation. LC Class. No.: HD57.7 / .A32 2009 CTE Dewey Class. No.: 658.4/092