Malaniiuk, Mariia. ‚ÄúTHEORETICAL BACKGROUND OF INTELLECTUAL DISABILITY: POSSIBILITIES AND LIMITATIONS‚ÄĚ. Scientific Journal of Polonia University 36, no. 5 (November 25, 2019): 103-110. Accessed June 6, 2020. http://nuife.org/index.php/pnap/article/view/394.