Ong, Pick-Sheen, Siew-Teng Ong, and Yung-Tse Hung. 2013. “Utilization of Mango Leaf As a Low-Cost Adsorbent for the Removal of Cu(II) Ions from Aqueous Solution”. Asian Journal of Chemistry 25 (11):6141-45. https://doi.org/10.14233/ajchem.2013.14290.