Judul asli : "Improving Children`s Learnings Ability"
No Inv.: 116146/P/Perp/10/1c~140610/SM/Perp/14/1c~140560/SM/Perp/14/1c~144310/PH/Perp/14/1c
No Inv.: 2365/S/Perp/87/1c~1227-1229/Perp/81/3c~634-651/Perp/81/15c~506/S/Perp/87/1c~1874-1875/S/Perp/91/2c
No Inv.: 1363-1370/BD/Perp/89/8c
No Inv.: 89240-89242/P/Perp/04/3c~115117/S/perp/08/1c
No Inv.: 128448/SM/Perp/10/1c
No Inv.: 1261, 78060/10/1c/Perp/74/1c
Bibliografi : hlm. 345-346 No Inv.: 144420,144403/S/Perp/14/2c
Bibliografi : hlm. 240-242