Safiai, Mohd Hafiz; Ibrahim, Ibnor Azli (2016), „Tracing the History of Astrolabe Inventions Across Civilisations“, Islamic Perspectives on Science and Technology, Springer Singapore, 373–82-bet, doi:10.1007/978-981-287-778-9_26, ISBN978-981-287-777-2
Cavin, Jerry D. (2011-08-20), „Ulugh Beg“, The Amateur Astronomer's Guide to the Deep-Sky Catalogs, Patrick Moore's Practical Astronomy Series, Springer New York, 51–54-bet, doi:10.1007/978-1-4614-0656-3_3, ISBN978-1-4614-0655-6
Kennedy, E. S. (1956). "A Survey of Islamic Astronomical Tables". Transactions of the American Philosophical Society46 (2): 123–77. doi:10.2307/1005726. ISSN0065-9746.
Kennedy, E. S. (1956). "A Survey of Islamic Astronomical Tables". Transactions of the American Philosophical Society46 (2): 123–77. doi:10.2307/1005726. ISSN0065-9746.
