Chapman, Gary D. The 5 languages of appreciation in the workplace : empowering organizations by encouraging people / Gary D. Chapman, Paul E. White. - Chicago, Ill. : Northfield Publishing, 2011. - 264 p. Includes bibliographical references ISBN: 9780802461988 Subjects--Topical Terms: Employee motivationPersonnel management LC Class. No.: HF 5549.5 .M63 / C426F