Ong, Siew-Teng, et al. “Application of Durian Peel (Durio Zibethinus Murray) for Removal of Methylene Blue from Aqueous Solution”. Asian Journal of Chemistry, vol. 23, no. 7, Mar. 2011, pp. 2898-02, https://asianpubs.org/index.php/ajchem/article/view/10577.