'Umar Khayyam (Indonesian Wikipedia)

Analysis of information sources in references of the Wikipedia article "'Umar Khayyam" in Indonesian language version.

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Al-Khalili, Jim (30 September 2010). Pathfinders: The Golden Age of Arabic Science (dalam bahasa Inggris). Penguin UK. ISBN 978-0-14-196501-7. Later, al-Karkhi, Ibn-Tahir and the great Ibn al-Haytham in the tenth/eleventh century took it further by considering cubic and quartic equations, followed by the Persian mathematician and poet Omar Khayyam in the eleventh century

Rosenfeld, B. A.; Fouchécour, Ch-H. De (24 April 2012). "ʿUmar K̲h̲ayyam". Encyclopaedia of Islam, Second Edition (dalam bahasa Inggris).

"Omar Khayyam (Persian poet and astronomer)". Britannica.com. Diakses tanggal 30 Mei 2012.
"Omar Khayyam | Persian poet and astronomer". Encyclopedia Britannica (dalam bahasa Inggris). Diakses tanggal 13 July 2018. Omar Khayyam, Arabic in full Ghiyāth al-Dīn Abū al-Fatḥ ʿUmar ibn Ibrāhīm al-Nīsābūrī al-Khayyāmī, (born May 18, 1048, Neyshābūr [also spelled Nīshāpūr], Khorāsān [now Iran] – died December 4, 1131, Neyshābūr), Persian mathematician, astronomer, and poet

Multiple Authors. "Khayyam, Omar". Encyclopædia Iranica Online. Diakses tanggal 5 Oktober 2017.