Singley, Mark K, The transfer of cognitive skill /Mark K. Singley, John R. Anderson. - Cambridge, Massachusetts : Harvard University press, (c)1989. - viii, 300 pages : illustrations ; 23 cm. LCCN: 88028404 Nat. Bib. No.: GB89-53380 LC Class. No.: LB1059 / .T736 1989 LB1059