(١) H.St. John philby: Arabia (London ١٩٣٠: A complete history of the community to date of publication)
(٢) Northern Neja (Neha: A. Musil New York ١٩٢٨: p.٢٥٦ - ٣٠٤ furnish a continuous history)
(٣) Ibn Saoud of Arabia and gis Land (London ١٩٢٨): Ameen Rohan
(٤) S.B.Mills: The Countries and Tribes of the Persian Gulf (London ١٩١٩ treats esecially of the dealings of the Wshhabis with Oman
(٥) S. H. Longrigg: Four Centuries of Modern Iraq (Oxford ١٩٢٥: theats especially of their dealings with Irak)
(٦) W.W.Hunter: The Indian MuCalcutta Re suslmans (London ١٨٧١) view De leer der Wah(D . S . MARGOLIOUTH)
د. عبد الرحمن الشيخ [د. ى. مرجليوث D. S. Margiouth]