Wagner, Rodd. 12 : the elements of great managing / Twelve Elements of great managing Rodd Wagner and James K. Harter. - 1st ed. - New York, NY : Gallup Press, 2006. - xvii, 237 p. ; 24 cm. Includes bibliographical references (p. 205-227). ISBN: 159562998X (9781595629982 : alk. paper) Subjects--Topical Terms: Executive ability.Management. Dewey Class. No.: 658 / WAG [ Shelf 77]