Rippin, Andrew (1985). "The Exegetical Genre "asbab al-nuzul": A Bibliographical and Terminological Survey". Bulletin of the School of Oriental and African Studies. 48 (1): 1–15. doi:10.1017/s0041977x00026926.
Rippin, Andrew (1988). "The Function of "Asbab al-nuzul" in qur'anic Exegesis". Bulletin of the School of Oriental and African Studies. 51 (1): 1–20. doi:10.1017/s0041977x00020188.