Septiyanti, Siti Nur Azizah, Irsyad Nugraha, and Ateng Kurnia. 2023. “INVESTIGATING THE CHALLENGES FACED BY EFL TEACHERS IN DEVELOPING STUDENTS’ 4C SKILLS IN 21ST CENTURY EDUCATION”. English Education and Applied Linguistics Journal (EEAL Journal) 6 (2):87-101. https://doi.org/10.31980/eeal.v6i2.49.