Skowroński, Bartłomiej. “FACTORS RELATED TO SCHOOL ACHIEVEMENTS OF MIDDLE MENTALLY RETARDED CHILDREN WITH DOWN’S SYNDROME”. Pedagogical Forum 1, no. 2 (November 12, 2016): 207–245. Accessed May 18, 2024. https://www.czasopisma.uksw.edu.pl/index.php/fp/article/view/328.