DANIEL, HAFIZUL, Ts HAZLI ROSLAN, and SUHAILA SARI. “Automatic Deodorization and Toilet Cleaning System”. Progress in Engineering Application and Technology 4, no. 2 (December 21, 2023): 001–012. Accessed July 18, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/10109.