Twitcheil, K.S.
Saudi Arabia with an account of the development of its natural resources with the collaboration of and
New Jersey Princeton Univ. 1958
 Buku Teks
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
The Kingdom of Saudi Arabia : Modernization and development
The Arab Printing Press, 2002
 Buku Teks
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