DINELTI FITRIA; LUFRI, L.; ELIZAR, E.; ALI AMRAN. 21st Century Skill-Based Learning (Teacher Problems In Applying 21st Century Skills). International Journal Of Humanities Education and Social Sciences, [S. l.], v. 2, n. 4, 2023. DOI: 10.55227/ijhess.v2i4.409. Disponível em: https://ijhess.com/index.php/ijhess/article/view/409. Acesso em: 4 dec. 2025.