Narymbet, G., Кabyltayeva S., & Baibosynova, G. (2022). The role of the Kazakh heroic epic as a historical source in the study of the history of Ulus Jochi. Bulletin of the Karaganda University History. Philosophy Series, 108(4), 203–207. https://doi.org/10.31489/2022hph4/203-207