Hashim, Norazlina, and Lili Shakirah Hassan. “Development and Evaluation of Herbal Neem Soap”. International Journal of Synergy in Engineering and Technology 5, no. 1 (April 1, 2024): 24-35. Accessed October 30, 2026. https://ijset.tatiuc.edu.my/index.php/ijset/article/view/200.