Grabovska, Sofiia, Nataliia Grebin, and Ruslana Karkovska. “Different Approaches to Desing of the Group Traning in Adult Learning”. Journal of Education Culture and Society 12, no. 1 (June 17, 2021): 164–176. Accessed September 20, 2021. https://jecs.pl/index.php/jecs/article/view/1312.