No Inv.: 80868/P/02/1c
No Inv.: 1451-1460/P/Perp/98/10c~120493/SM/Perp/09/1c
Bibliografi : hlm. 197-198
No Inv.: 836-845/P/Perp/97/10c
Bibliografi : hlm. 210
Bibliografi : hlm. 317-318
Bibliografi : hlm. 162
Bibliografi : hlm. 250
Judul asli : "The Geography of genius: a search for the world's most creative places from ancient Athens to Silicon Valley" Bibliografi : hlm. 472-478