اغنى دولة عربية. الوطن العربي

Vaglieri, Khaybar, Encyclopedia of Islam• The Prophet's Establishing a State and His Succession	David Cook 2007 , p
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اغنى دولة في العالم

Yusuf Abdallah, Die Vergangenheit lebt: Mensch, Landschaft und Geschichte im Jemen S.

اغنى دولة في العالم: Werner Daum, Yemen - 3000 years of history, pp
ما هي أغنى دولة عربية: Dumper, Michael; Stanley, Bruce E
ما هي أغنى دولة عربية: International Journal of Middle East Studies

Middle East Studies 12: 95—98• The first UN General Assembly Resolution regarding the matter• Ministry of Foreign Affairs, Bahrain	Kitchen, Documentation For Ancient Arabia, Part I Liverpool University Press, 1994, p
Captain Mahan, General Gordon and the origin of the term Middle East	Egypt's Bid for Arab Leadership: Implications for U

أغنى دولة عربية

, Table 3: Human and income poverty, p.

10 اغنى دول العربية: Watt, al- Hudaybiya or al-Hudaybiyya Encyclopedia of Islam• Pirenne, Le Royaume Sud-Arabc de Qataban et sa Datation, Louvain, 1961
اغنى دولة عربية: Draft A Short Encyclopedia of the Baha'i Faith
اغنى دولة عربية