Fitri, Y.I. et al. 2025. Designing PBL-Based Mobile Learning: A Needs Analysis for Enhancing 21st Century Skills in Vocational Schools. AL-ISHLAH: Jurnal Pendidikan. 17, 2 (Jul. 2025), 3612–3622. DOI:https://doi.org/10.35445/alishlah.v17i2.6699.