No Inv.: 5281-5285/P/Perp/92/5c
No Inv.: 2654-2663/P/Perp/97/10c
No Inv.: 87213-87214/P/Perp/03/2c~90448-90450/P/Perp/04/
Bibliografi : hlm. 308-330
Bibliografi : hlm. 325-335
Bibliografi : hlm. 204
No Inv.: 3621-3625/P/Perp/92/5c
No Inv.: 2589-2593/P/Perp/92/5c
Judul asli : "Preparing for the Twenty-first Century"