Sandler, Len 1946- Becoming an extraordinary manager: the 5 essentials for success/ Len Sandler. - New York: AMACOM, American Management Association, c2008. - xiii, 241 p.: ill.; 23 cm. Includes bibliographical references (p. 233-234) and index. ISBN: 9780814480656 Subjects--Topical Terms: Management.Personnel management.