N. Dehtiarova, O. . Hontar, and H. . Vernydub, “ATTITUDE TOWARDS MASS OPEN ONLINE COURSES AS A FORM OF NON-FORMAL EDUCATION”, ФМО, vol. 32, no. 6, pp. 18–22, Jan. 2022, doi: 10.31110/2413-1571-2021-032-6-003.