Sholichin, M. ., Z. Zulyusri, L. Lufri, and A. . Razak. “Analisis Kendala Pembelajaran Online Selama Pandemi Covid-19 Pada Mata Pelajaran IPA Di SMPN 1 Bayung Lencir : (Analysis of the Obstacles of Online Learning During the Covid-19 Pandemic on IPA Subjects at SMPN 1 Bayung Lencir)”. 2021. BIODIK, vol. 7, no. 2, June 2020, pp. 163-8, doi:10.22437/bio.v7i2.12926.