Veirissa, A., E. Handoyo, and N. Oktarina. “Comparing Online and Offline Learning: Impact on Students’ Motivation and Learning Achievement in English Subjects at HSPG Semarang Community Learning Activity Center”. Educational Management, Vol. 11, no. 2, Aug. 2022, pp. 240-7, https://journal.unnes.ac.id/sju/eduman/article/view/68938.