BAYU PUTRA, Ramdani; DEFIT, Sarjon; FITRI, Hasmaynelis. EVALUATION OF THE QUALITY OF ONLINE LEARNING USING THE ROUGH SET METHOD IN THE COVID 19 ERA . Jurnal Ipteks Terapan, [S. l.], v. 15, n. 2, p. 159–170, 2021. DOI: 10.22216/jit.v15i2.256. Disponível em: https://publikasi.lldikti10.id/index.php/jit/article/view/256. Acesso em: 24 jun. 2026.