T. . Berdibek, T. . Nurgul, B. . Madina, S. . Zhanylsyn, K. . Nurgul, and K. . Laila, “Case Study of Communication Issues Influence on Self-Esteem in Learners with ID”, J. Intellect. Disabl. Diagn. Treat., vol. 9, no. 3, pp. 342–348, Jun. 2021.