Balanche, Fabrice. "Hoover Institute"(PDF). The United States in Northeastern Syria (بالإنجليزية). Archived from the original(PDF) on 2020-03-11. Retrieved 2020-07-10.
Balanche, Fabrice. "Hoover Institute"(PDF). The United States in Northeastern Syria (بالإنجليزية). Archived from the original(PDF) on 2020-03-11. Retrieved 2020-07-10.