Berdibek, T. ., T. . Nurgul, B. . Madina, S. . Zhanylsyn, K. . Nurgul, and K. . Laila. “Case Study of Communication Issues Influence on Self-Esteem in Learners With ID”. Journal of Intellectual Disability - Diagnosis and Treatment, vol. 9, no. 3, June 2021, pp. 342-8, doi:10.6000/2292-2598.2021.09.03.11.