Bibliografi : hlm. 224-235 No Inv.: 140779/S/Perp/12/1c
No Inv.: 141873-141877/P/Perp/14/5c
Termasuk Bibliografi No Inv.: 139547, 139548/P/Perp/14/2c
Bibliografi : hlm. 185-186 No Inv.: 140844/Psm/Perp/14/1c
No Inv.: 133939/SM/Perp/13/1c
Judul asli : "The secret of childhood"
Bibliografi : hlm. 257-262