Bradford, E. The Sultan's admiral, 1968 t.p. (Barbarossa) p. x (Kheir-ed-Din)
Düzdağ, M.E. Akdeniz bizimdi, 1984 t.p. (Hayreddin Paşa) cover p. 1 (Hayrettin Paşa) p. 404 (b. between 1466 and 1483) p. 412 (d. 1546)
Encyc. Amer. v. 3, p. 220 (Barbarossa II; d. 1546; originally named Khizr; better known as Khair ed-Din)
Encyc. Brit. 15th ed. (Micropedia) v. 1, p. 805 (Barbarossa; European name for Khayr ad-Din; originally named Khiḍr; d. 1546)
Encyc. of Islam, new ed. v. 4, p. 1155 (K̲h̲ayr al-Dīn (Khıdır) Pasha, Barbarossa (b. 1466?; d. 1546))
Fondation de la régence d'Alger, 2006 t. p. (Khaïr-ed-Dîn)
Gran enc. de Esp., 1990 (Barbarroja; Barbarrosa; Khair ad-Din; b. 1467 or 1490 in Mitylene, Greece?; famous pirate; succeeded his brother Horuk as emir of Argel; d. 1556)
Historia de los Barbarrojas de Argel, 2003 p. 9, etc. (Khadir-Eddin; Aradin Barbarroja; Haradin Barbarroja)