SENGGIRBAY, Mukhtar. “SUFI IDEOLOGY, SHAMANIST RITUALS: HOW RELIGIOUS GROUPS BECAME POPULAR IN KAZAKHSTAN?”. CENTRAL ASIA AND THE CAUCASUS, vol. 19, no. 1, Feb. 2018, pp. 77-83, https://ca-c.org/CAC/index.php/cac/article/view/1429.