Burhaein, E., Sumaryanti, S. and Phytanza, D. T. P. (2018) “Reliability of instruments friendship activity observational test and adjective observational test for intellectual disability in unified sports”, Journal of Education, Health and Sport, 8(7), pp. 291–304. Available at: https://apcz.umk.pl/JEHS/article/view/5651 (Accessed: 7 May 2024).