Rozaimi Jamaludin, M., J. Sidik Bujang, M. Kusnan, and H. Omar. “Shading Responses of the Seagrass, Halophila Ovalis: A Preliminary Comparison Between Cultures and Naturally Growing Plants”. Malaysian Journal of Science, vol. 24, no. 1, Jan. 2005, pp. 23-29, https://adum.um.edu.my/index.php/MJS/article/view/8928.