Boyd, Denise Roberts Lifespan development / Denise Boyd, Helen Bee. - 6th ed. - Upper Saddle River, NJ : Pearson, 2012. - xxvii, 620 p. : ill. (some col.) ; 28 cm. ISBN: 9780205037520 RM486.86 0205037526 Subjects--Topical Terms: Developmental psychology.