Rijal, M., M. Amin, F. Rohman, E. Suarsini, N. A. Natsir, and S. Subhan. “Pistia Stratiotes and Limnocharis Flava As Phytoremediation Heavy Metals Lead and Cadmium in the Arbes Ambon”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 27, no. 2, May 2016, pp. 182-8, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/5781.