Hidayat, N. and Suroto, S. 2023. Using Multimedia in Business Communication Learning: Case studies to Improve Vocational Students Business Presentations. AL-ISHLAH: Jurnal Pendidikan. 15, 1 (Jan. 2023), 611–618. DOI:https://doi.org/10.35445/alishlah.v15i1.2278.