Prasetya, Rizky Eka. “The Characteristics of Instructional Systematic Design English Online Teaching Environment”. Jo-ELT (Journal of English Language Teaching) Fakultas Pendidikan Bahasa & Seni Prodi Pendidikan Bahasa Inggris IKIP, vol. 8, no. 2, Dec. 2021, pp. 109-23, doi:10.33394/jo-elt.v8i2.3994.