Sujiwa, Akbar, and Irwan Puji Raharjo. “DESIGN AND CONSTRUCTION OF AUTOMATIC PORTABLE DISINFECTANT BUTTON TO PREVENT THE SPREAD OF THE COVID-19 VIRUS”. Best : Journal of Applied Electrical, Science and Technology, vol. 3, no. 2, Sept. 2021, pp. 1-4, https://doi.org/10.36456/best.vol3.no2.4212.