Sorongan, Erick, et al. “The Application of Energy Management Systems Using the Internet of Things to Improve the Efficiency of Electrical Energy Usage in the MSMEs Sector”. Protek : Jurnal Ilmiah Teknik Elektro, vol. 10, no. 1, Jan. 2023, pp. 26-32, doi:10.33387/protk.v10i1.5042.