SEPTIYANTI, Siti Nur Azizah; NUGRAHA, Irsyad; KURNIA, Ateng. INVESTIGATING THE CHALLENGES FACED BY EFL TEACHERS IN DEVELOPING STUDENTS’ 4C SKILLS IN 21ST CENTURY EDUCATION. English Education and Applied Linguistics Journal (EEAL Journal), [S. l.], v. 6, n. 2, p. 87–101, 2023. DOI: 10.31980/eeal.v6i2.49. Disponível em: https://journal.institutpendidikan.ac.id/index.php/eeal/article/view/49. Acesso em: 4 jun. 2025.