Text ( visual ) : unmediated Imagination and play in the electronic age / Dorothy G. Singer and Jerome L. Singer. -- : pbk. -- Cambridge, Mass. : Harvard University Press , 2007. -- 210 p. : ill. ; 24 cm. -- "First Harvard University Press paperback edition, 2007" -- t.p. verso ; Includes bibliographical references (p. 171-201) and index. -- ISBN 9780674024182 ; (BA84837841) ; https://ci.nii.ac.jp/ncid/BA84837841 Author Heading(s): Singer, Dorothy G. ; Singer, Jerome L.. -- Classification(s): LCC : BF717 ; DC22 : 306.4/81. -- Subject Heading(s): LCSH : Play ; LCSH : Imagination in children ; LCSH : Television and children ; LCSH : Computers and children