Pusporini, W., D. Septiani, and S. Susanti. “The E-Learning Survey Analysis in Universitas Sarjanawiyata Tamansiswa: Should It Be Improved?”. Psychology, Evaluation, and Technology in Educational Research, vol. 4, no. 1, Sept. 2021, pp. 44-52, doi:10.33292/petier.v4i1.87.