Wan-Loy, C., A. Alw, and P. Siew Moi. “Phycoerythrin Production by a Marine Osdilatoria (Cyanophyta)”. Malaysian Journal of Science, vol. 21, no. 1&2, Apr. 2002, pp. 69-75, https://adum.um.edu.my/index.php/MJS/article/view/8592.