Twitchell, K.S.
Saudi Arabia, with an account of the development of its natural resources / by K.S. Twitchell, with the collaboration of Edward J. Jurji
Princeton University Press, 1953
 Buku Teks
Twitchell, K.S.
Saudi Arabia : with an account of the development of its natural resources / by K. S. Twitchell
Princeton University, 1958
 Buku Teks
The Kingdom of Saudi Arabia: modernization and development
Al-Arabi Printing Press, 2002
 Buku Teks SO
Al-Farsy, Fouad
Saudi Arabia : a case study for development
KPI, 1986
 Buku Teks SO
Kingdom of Saudi Arabia: History-Civilization-Development
Kingdom of Saudi Arabia
Ministry of Information Foreign Information, 2002
 Buku Teks SO