Clauson, G. and Róna-Tas, A. (eds.) (1981) Pre-thirteenth-century Turkish : Index Vol. I. SZTE BTK Institute of Hungarian Language and Literature University of Szeged (Studia Uralo-altaica). Available at: https://ebook.ek.szte.hu/index.php/btk-magyarnyelviirodalmi-intezet/catalog/book/182 (Accessed: 3 July 2025).