Kirenko, J. and Prokopiak, A. 2020. ABAS-3 and the PAC-1 in the Study of Adaptive Behaviour of Children and Adolescents with Deeper Intellectual Disabilities. Przegląd Badań Edukacyjnych (Educational Studies Review). 2, 31 (Dec. 2020), 43–60. DOI:https://doi.org/10.12775/PBE.2020.018.