Iswara, Widya Hilalia, et al. “Identifikasi Kesulitan Belajar Kimia Siswa SMA Negeri 1 Narmada Selama Pandemi Covid-19”. Chemistry Education Practice, vol. 4, no. 3, Nov. 2021, pp. 242-9, doi:10.29303/cep.v4i3.2694.