PANDIANGAN, P. The Validity and Practicality of The PEPSA Teaching Model to Improve Critical Thinking Skills through Online Tutorials in Open and Distance Education. International Journal of Research in STEM Education, [S. l.], v. 4, n. 1, p. 39–54, 2022. Disponível em: https://jurnal-fkip.ut.ac.id/index.php/ijrse/article/view/930. Acesso em: 8 apr. 2025.