Serjeant, King & Al-Akwaʿ 1983

Full Citation: Serjeant, R.B., King, D.A. & Al-Akwaʿ, I. Calendars, the Time of Day and Mathematical Astronomy. Pages 32-35 in Serjeant, R.B. & Lewcock, R. (eds), Ṣanʿāʾ. An Arabian Islamic City. Repreinted in 2013 by Melisende, London. London: World of Islam Festival Trust, 1983.