Karlo I (2. april 742 – 28. januar 814), poznatiji kao Karlo Veliki (latinski: Karolus Magnus), bio je franački kralj[1] od 768. do 814. godine. Tokom vladavine ujedinio je veliki dio Evrope čime je postavio temelje današnjoj Francuskoj, Njemačkoj i Holandiji. Naslijedio ga je njegov sin Ludovik I.
Douglass, William A; Bilbao, Jon (2005). Amerikanuak: Basques in the New World. The Basque series. Reno & Las Vegas: University of Nevada Press. ISBN978-0874176254.
Einhard (1880) [n.d.]. Einhard: The Life of Charlemagne. Prevod: Samuel Epes Turner. New York: Harper & Brothers. Arhivirano s originala, 14. 5. 2008. Pristupljeno 6. 4. 2023 – preko Medieval Sourcebook, Fordham University.
Fouracre, Paul (2005). "The Long Shadow of the Merovingians". u Joanna Story (ured.). Charlemagne: Empire and Society. Manchester: Manchester University Press. ISBN978-0-71907-089-1.
Frassetto, Michael (2003). Encyclopedia of Barbarian Europe: Society in Transformation. Santa Barbara, CA: ABC-CLIO. ISBN978-1-57607-263-9.
Fried, Johannes (2016). Charlemagne. trans. Peter Lewis. Cambridge, MA: Harvard University Press. ISBN978-0674737396.
James, David; Ibn al-Qūṭiyya, Muḥammad b ʻUmar (2009). Early Islamic Spain: The History of Ibn al-Qūṭiyya: a study of the unique Arabic manuscript in the Bibliothèque Nationale de France, Paris, with a translation, notes and comments. London and New York: Routledge. ISBN978-0-41547-552-5.
Lewers Langston, Aileen; Buck, J. Orton Jr., ured. (1974). Pedigrees of Some of the Emperor Charlemagne's Descendants. Baltimore: Genealogical Pub. Co.
Riché, Pierre (1993). The Carolingians: A Family Who Forged Europe. Middle Ages Series. Philadelphia: University of Pennsylvania Press. ISBN978-0-8122-1342-3.