Abdullah, et al. “Knowledge Improvement through Smartphone Utilization in the Remote Control System Module of Electronic Equipment at SMKS Muhammadiyah 9 Medan”. ABDI SABHA (Jurnal Pengabdian Kepada Masyarakat), vol. 4, no. 3, Oct. 2023, pp. 38-47, doi:10.53695/jas.v4i3.971.