Mental retardation / [edited by] Mary Beirne-Smith, Richard F. Ittenbach, James R. Patton. - 6th ed. - Upper Saddle River, N.J. : Merrill/Prentice Hall, c2002. - xviii, 570 p. : ill. ; 24 cm. Includes bibliographical references and indexes. ISBN: 0130329908 LCCN: 00051951 Subjects--Topical Terms: Mental retardation. LC Class. No.: RC570 / .MEN 2002 Dewey Class. No.: 362.3