Marpuah, Siti, et al. “Kesan Pembelajaran Online Di Musim Pandemik Covid-19 Terhadap Perkembangan Akhlak Pelajar ”. Human Sustainability Procedia, vol. 2, no. 2, Dec. 2022, pp. 43-50, https://publisher.uthm.edu.my/periodicals/index.php/hsp/article/view/9515.