* Conrad, Lawrence I. (1987). "Abraha and Muhammad: some observations apropos of chronology and literary topoi in the early Arabic historical tradition1". Bulletin of the School of Oriental and African Studies50 (2): 225–40. doi:10.1017/S0041977X00049016.
* Conrad, Lawrence I. (1987). "Abraha and Muhammad: some observations apropos of chronology and literary topoi in the early Arabic historical tradition1". Bulletin of the School of Oriental and African Studies50 (2): 225–40. doi:10.1017/S0041977X00049016.