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Atbaş, Zeynep (1 August 2019). Artistic Aspects of Sultan Bayezid II's Book Treasury Collection: Extant Volumes Preserved at the Topkapı Palace Museum Library (Treasures of Knowledge: An Inventory of the Ottoman Palace Library (1502/3-1503/4) (2 vols)). Brill. p. 195. doi:10.1163/9789004402508_005.
Upton 1933. Upton, Joseph M. (1933). "A Manuscript of "The Book of the Fixed Stars" by ʿAbd Ar-Raḥmān Aṣ-Ṣūfī". Metropolitan Museum Studies. 4 (2): 179–197. doi:10.2307/1522800. JSTOR1522800.
Upton 1933. Upton, Joseph M. (1933). "A Manuscript of "The Book of the Fixed Stars" by ʿAbd Ar-Raḥmān Aṣ-Ṣūfī". Metropolitan Museum Studies. 4 (2): 179–197. doi:10.2307/1522800. JSTOR1522800.
muslimheritage.com
Winterburn, Emily (2005). "Using an Astrolabe". Muslim Heritage. Foundation for Science, Technology and Civilisation, UK (FSTCUK). Retrieved 22 January 2008.