Clauson G, Róna-Tas A, eds. Pre-Thirteenth-Century Turkish : Index Vol. I. Vol. Vol. 14. SZTE BTK Institute of Hungarian Language and Literature University of Szeged; 1981. Accessed July 3, 2025. https://ebook.ek.szte.hu/index.php/btk-magyarnyelviirodalmi-intezet/catalog/book/182