Subarmaniam, Diroshaa, and Mimi Haryani Hassim. “IMPROVING INDOOR AIR QUALITY FOR PREVENTING TRANSMISSION OF COVID-19 AT BACTIGUARD MALAYSIA SDN. BHD AND BACTIGUARD SOUTH EAST ASIA”. Journal of Energy and Safety Technology (JEST) 7, no. 1 (June 20, 2024): 1–13. Accessed November 21, 2024. https://jest.utm.my/index.php/jest/article/view/154.