Made Ratminingsih, N., Ketut Trika Adi Ana, I., Ridho Fatmawan, A., Putu Artini, L., & Nyoman Padmadewi, N. (2022). WhatsApp implementation on pedagogical content courses during COVID-19 pandemic: Students’ learning activities and perception. Kasetsart Journal of Social Sciences, 43(1), 238–244. retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/257021