Tham khảo Người_Bulgar

  1. Hyun Jin Kim (2013). The Huns, Rome and the Birth of Europe. Cambridge University Press. tr. 58–59, 150–155, 168, 204, 243. ISBN 9781107009066
  2. Golden 1992.
  3. McKitterick, Rosamond (1995). The New Cambridge Medieval History. Cambridge University Press. tr. 229. ISBN 9780521362924. The exact ethnic origins of the Danubian Bulgars is controversial. It is in any case most probable that they had enveloped groupings of diverse origins during their migration westwards across the Eurasian steppes, and they undoubtedly spoke a form of Turkic as their main language. The Bulgars long retained many of the customs, military tactics, titles and emblems of a nomadic people of the steppes. 
  4. Sophoulis 2011.
  5. Brook 2006.
  6. “Bulgar”. Encyclopædia Britannica Online. Encyclopædia Britannica, Inc. Truy cập ngày 3 tháng 6 năm 2015. Although many scholars, including linguists, had posited that the Bulgars were derived from a Turkic tribe of Central Asia (perhaps with Iranian elements), modern genetic research points to an affiliation with western Eurasian populations. 
  7. Cenghiz, Ilhan (2015). “Y-DNA Haplogroups in Turkic People”. yhaplogroups.wordpress.com. 
  8. Suslova và đồng nghiệp (tháng 10 năm 2012). “HLA gene and haplotype frequencies in Russians, Bashkirs and Tatars, living in the Chelyabinsk Region (Russian South Urals).”. International Journal of Immunogenetics (Blackwell Publishing Ltd) 39 (5): 375–392. PMID 22520580. doi:10.1111/j.1744-313X.2012.01117.x
  9. 1 2 3 4 5 6 Waldman, Mason 2006.
  10. Golden 2011.
  11. Fiedler 2008.
  12. Shnirelʹman 1996.