Yerdembekov Б. ., Isbek Б. ., and Satbay Ж. . “History of Abay’s Poems”. Bulletin of L.N. Gumilyov Eurasian National University. PHILOLOGY Series, vol. 135, no. 2, June 2021, pp. 82-91, doi:10.32523/2616-678X-2021-135-2-82-91.