[1]-Clements. William M. (ińlisçe) The Green wood Encyclopedia of World Folklore and East Asia, Middle East (2006 bas.) Greenwood Press ss.432 The first examples of this verbal tradition include the Alp Ertonga Legend, which relates how Alp ErTunga, The Saka khan who is thanght to have lived in the seventh sentury prevailed against the Iranian armies. [2]- «Bu túrk beglerinde atı belgúlúg tonga alp er erdi kutı belgúlúg» - Bu túrk begleriniń arasynda ady meşhur ykbaly aýan - beýan edilen Tunga Alp Er di. Kutadgu Bilig - Ýusup has Hajib. [3]- Ahmet Zeki Validi Togan 1932. On Mubarak shah Ghuri sahypa 852. [4]- Atalaý. Besim (2006) basmasy. Diwany lugatitturk. Ankara ş. Túrk tarıh kurumu basimevi ISBSN 975-16-0405-2. Jilt III. sahypa 149-150. [5]- Kyzlasov. 2003 sssf 42. [6]- Ýusup Has Hajyb. Kutadgu Bilig I Metin taýynlan R.R.Arat. Ankara 1991. sahypa 43. [7]- Aly Şir Nowaýy. Taryhy Múlk i Ajam. Jilt XIV sahypa191-195.