Zuber, M. ., R. . Jamuna, and M. Muthmainnah. “Challenges Faced by Visually Impaired Teachers Working in Blind Schools in Online Teaching During Covid 19”. International Journal of Education Research and Development, vol. 1, no. 2, Oct. 2021, pp. 127-36, doi:10.52760/ijerd.v1i2.8.