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The global built environment as a representation of realities: By author:A.J.J. Mekking [1]
Smith, David E. (01. 06. 1958). „History of Mathematics”. Courier Corporation. Приступљено 05. 01. 2019 — преко Google Books.
Science in Islamic civilisation: proceedings of the international symposia: "Science institutions in Islamic civilisation", & "Science and technology in the Turkish and Islamic world"[2]
Encyclopædia Britannica, "Timur", Online Academic Edition, 2007. Quotation: "Timur was a member of the Turkicized Barlas tribe, a Mongol subgroup that had settled in Transoxania..."
Krisciunas, Kevin (1992). „The Legacy of Ulugh Beg”. Ур.: Paksoy, Hasan Bulent. Central Asian Monuments. Istanbul: Isis Press. Архивирано из оригинала 19. 05. 2019. г. Приступљено 02. 03. 2017 — преко Carrie Books.
Krisciunas, Kevin (1992). „The Legacy of Ulugh Beg”. Ур.: Paksoy, Hasan Bulent. Central Asian Monuments. Istanbul: Isis Press. Архивирано из оригинала 19. 05. 2019. г. Приступљено 02. 03. 2017 — преко Carrie Books.