Al‐Nasif, Abdallah (1981-01-01). "Al‐'Ula (Saudi Arabia): a report on a historical and archaeological survey". British Society for Middle Eastern Studies Bulletin. 8 (1): 30–32. doi:10.1080/13530198108705304. ISSN0305-6139.
jstor.org
Power, Timothy (2012). The Red Sea from Byzantium to the Caliphate: ad 500–1000. American University in Cairo Press. ISBN978-977-416-544-3. JSTORj.ctt15m7h9n.
Al‐Nasif, Abdallah (1981-01-01). "Al‐'Ula (Saudi Arabia): a report on a historical and archaeological survey". British Society for Middle Eastern Studies Bulletin. 8 (1): 30–32. doi:10.1080/13530198108705304. ISSN0305-6139.