Alhamuddin, Alhamuddin, and Rony Sandra Yofa Zebua. “Perceptions of Indonesian Students on the Role of Teachers in Offline and Online Learning During the Covid-19 Pandemic Period”. Jurnal Kependidikan: Jurnal Hasil Penelitian Dan Kajian Kepustakaan Di Bidang Pendidikan, Pengajaran Dan Pembelajaran, vol. 7, no. 4, Dec. 2021, pp. 834-4, doi:10.33394/jk.v7i4.3881.