Muḥammad B. 'Abd Al-Raḥmān Rāšid Al-ṯanyān, Nuqüš al-qarn al-hijrï al-'awwal (al-qarn al-säbi' al-mïlâdï) al-mu'arraḫa fī al-mamlaka al-'arabiyya al-sa'üdiyya: diräsa taḥlïla jadïda. (15th February 2018) - Smith, Rex