al- Qabāʾil aṯ-Ṯamūdīya wa-'ṣ-ṣafwīya dirāsa muqārana - Rūsān, Maḥmūd Muḥammad ar- (Ǧāmiʿat al-Malik Saʿūd, ʿImādat Šuʾūn al-Maktabāt, 1987)