Abu Bakar, N., N. Hashim, W. R. Wan Mahamod, S. S. Syed Abd Azziz, Y. Juahir, R. Yahaya, W. Chee Fah, R. Ibrahim, M. F. Aziz, and N. A. Mahmad Basir. “The Potential of Ferrocenium As a Sensing Reagent for Determination of 2,4,6-Trichlorophenol in Water Samples”. Journal of Science and Mathematics Letters, vol. 3, June 2015, pp. 16-23, https://ejournal.upsi.edu.my/index.php/JSML/article/view/345.