1. Kister, M. J. , ‘al-Ḥīra: Some notes on its relations with Arabia’, Arabica, 15 (1968), p.
2. al-ʿAsqalānī, Ḥajar , al-Maṭālib al-ʿāliya bi-zawāʾid al-masānīd al-thamāniya, ed. Ḥabīb al-Raḥmān al-Aʿẓamī , 4 vols. (Kuwait, 1973)
3. Levi della Vida, Giorgio , ‘Pre-Islamic Arabia’, in Nabih Amin Faris (ed.), The Arab heritage, Princeton, 1944 –57.
4. al-ʿAskarī, Hilāl , al-Awāʾil, ed. Muḥammad al-Miṣrī and Walīd Qaṣṣāb , 2 vols. (Damascus, 1975)
5. The late Ḥamad al-Jāsir wrote a monograph entitled Bāhila al-qabīla l-muftarā ʿalayhā (Riyadh, 1410