A. C. Chan and N. M. Abdullah, “Total Phenolic Content of Five Selected Malaysian Herbs”, Politeknik & Kolej Komuniti Journal of Engineering and Technology, vol. 7, no. 1, pp. 85–93, Nov. 2022, Accessed: Apr. 02, 2025. [Online]. Available: https://app.mypolycc.edu.my/journal/index.php/PMJET/article/view/79