Savant, Sarah Bowen (2014). Genealogy and Knowledge in Muslim Societies: Understanding the Past. Edinburgh University Press. стр. 77. ISBN978-0748644971. „Banu Khaldun al-Hadrami (Yemen, but not Qahtan), to which belonged the famous historian Ibn Khaldun. The family's ancestor was 'Uthman ibn Bakr ibn Khalid, called Khaldun, a Yemeni Arab among the conquerors who shared kinship with the Prophet's Companian Wa'il ibn Hujr and who settled first in Carmona and then in Seville.”
The Historical Muhammad, Irving M. Zeitlin. . Polity Press. 2007. pp. 21.
jstor.org
• Joseph J. Spengler (1964). "Economic Thought of Islam: Ibn Khaldun", Comparative Studies in Society and History, 6(3), pp. 268-306. • Jean David C. Boulakia (1971). "Ibn Khaldûn: A Fourteenth-Century Economist", Journal of Political Economy, 79(5), pp. 1105-1118.
