Glickman, Carl D. Supervision and instructional leadership : a developmental approach / Carl D. Glickman, Stephem P. Gordon, Jovita M. Ross. - 5th ed. - Boston : Allyn and Bacon, c2001. - xvi, 496p. : ill. ; 23 cm. Includes bibliographical references and indexes. ISBN: 0205322026 Subjects--Topical Terms: School supervision LC Class. No.: LB2806.4 / G49 2001