Bibliografi : hlm. 355 No Inv.: 111318-111320/P/Perp/07/3c~125995-125999/P/Perp/10/5c
Bibliografi : hlm. 295-306 No.Inv: 172122-172124/P/Perp/23
Bibliografi : hlm. 235-241
Judul asli : Developmentally appropriate practices, 5nd edition Bibliografi : hlm. 667-700
Bibliografi : hlm. 217-222
Bibliografi :hlm. 263-275
Bibliografi : hlm. 219 - 224
Bibliografi : hlm. 247-257