T.S, S., M. R, H. R, and M. M. Aneez. “Ambient Copper Induced Changes in the Respiration and Excretion of the Freshwater Fish, Sarotherodon Mossambicus (Trewaves)”. Malaysian Journal of Science, vol. 22, no. 2, Aug. 2003, pp. 35-39, https://juku.um.edu.my/index.php/MJS/article/view/8512.