Esin, E. (1977). "Tarkhan Nīzak or Tarkhan Tirek? An Enquiry concerning the Prince of Badhghīs Who in A. H. 91/A. D. 709–710 Opposed the 'Omayyad Conquest of Central Asia". Journal of the American Oriental Society. 97 (3): 330. doi:10.2307/600737. ISSN0003-0279. JSTOR600737.
Grenet, F. "NĒZAK". Encyclopaedia Iranica. Citing Tangshu XLIII, B, pp. 6–9 and Chavannes, Documents, p. 69, n. 2{{cite encyclopedia}}: CS1 maint: postscript (link)
jstor.org
Esin, E. (1977). "Tarkhan Nīzak or Tarkhan Tirek? An Enquiry concerning the Prince of Badhghīs Who in A. H. 91/A. D. 709–710 Opposed the 'Omayyad Conquest of Central Asia". Journal of the American Oriental Society. 97 (3): 330. doi:10.2307/600737. ISSN0003-0279. JSTOR600737.
Esin, E. (1977). "Tarkhan Nīzak or Tarkhan Tirek? An Enquiry concerning the Prince of Badhghīs Who in A. H. 91/A. D. 709–710 Opposed the 'Omayyad Conquest of Central Asia". Journal of the American Oriental Society. 97 (3): 330. doi:10.2307/600737. ISSN0003-0279. JSTOR600737.