Widarti, Hayuni Retno, et al. “Identification of Science Teacher Practices and Barriers in Preparation of Minimum Competency Assessment in the Covid-19 Pandemic Era”. Orbital: The Electronic Journal of Chemistry, vol. 14, no. 1, Apr. 2022, pp. 63-67, https://periodicos.ufms.br/index.php/orbital/article/view/15506.