J. J. Tan and N. H. B. H. Hashim, “The Effect of pH towards Copper (II) Bromide Reaction in Surfactant Determination”, peat, vol. 6, no. 1, pp. 74–80, Apr. 2025, Accessed: Apr. 07, 2026. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/19305