Ismiyati, Ismiyati, et al. “The Readiness of Prospective Teachers Based on Online Teaching Competencies and Learning Activities in COVID-19 Pandemic: A Cluster Analysis-Based Approach”. REID (Research and Evaluation in Education), vol. 8, no. 2, Dec. 2022, pp. 127-39, doi:10.21831/reid.v8i2.45576.