Geok Yuan Annie, Tan, Loni, Christabel, Sim, Ho Li, Nik Zahirah binti Nik Abdul Aziz, , Sarini binti Syafri, and Sabaratnam, Vikineswary. 2005. “Survey of Culturable Actinomycetes from Marine Macroorganisms and Mangrove Areas of Langkawi Islands”. Malaysian Journal of Science 24 (April):69-75. https://mjes.um.edu.my/index.php/MJS/article/view/8822.