Nasrullah, N. .-., A. .-. Rusmanayanti, E. .-. Rosalina, and R. P. Ningsih. “Putting Edmodo Into Classroom: Portraying Learning Management System (LMS) Manifestation”. Journal of English Education and Teaching, vol. 5, no. 3, Sept. 2021, pp. 317-29, doi:10.33369/jeet.5.3.317-329.