Bibliografi : hlm. 295-296
Bibliografi : hlm. 252-254 No Inv.: 132586/SM/Perp/12/1c~141090/PSM/Perp/14/1c
Bibliografi : hlm. 303-309
Bibliografi : hlm. 525-525 No Inv.: 141175/Psm/Perp/14/1c~141154/PSM/Perp/14/1c
Bibliografi : hlm. 229-234
Judul asli : "Sophie's world"
Bibliografi : hlm. 166
Bibliografi : hlm. 248-249