Bibliografi : hlm. 155-159
Bibliografi : hlm. 331-334
Bibliografi : hlm. 68-70
Judul asli : :"Early childhood education today"
No Inv.: 106832/P/Perp/06/1c
No Inv.: 109105/S/Perp/07/1c
No Inv.: 113488-113490/P/Perp/2008/3c
No Inv.: 114104/P/Perp/08/1c