Alfred B. Prados; Christopher M. Blanchard (2007). "Saudi Arabia: Current Issues and U.S. Relations"(CRS report for congress). Congressional Research Service. Archived(PDF) from the original on 21 May 2022. Retrieved 4 September 2020.
Alfred B. Prados; Christopher M. Blanchard (2007). "Saudi Arabia: Current Issues and U.S. Relations"(CRS report for congress). Congressional Research Service. Archived(PDF) from the original on 21 May 2022. Retrieved 4 September 2020.