Boyd, Denise Roberts. creator Bee, Helen L. Johnson, Paul A. text Toronto Pearson Allyn & Bacon c2009 3rd Canadian ed. monographic xx, 715 pages : Illustrations ; Previous eds. written by Helen Bee, Denise Boyd and Paul Johnson. Includes bibliographical references and indexes. Developmental psychology BF 713 BOY 9780205536207 0205536204 9780205536290 0205536298