Geok Yuan Annie, T., L. Christabel, S. Ho Li, N. Z. binti Nik Abdul Aziz, , S. binti Syafri, and S. Vikineswary. “Survey of Culturable Actinomycetes from Marine Macroorganisms and Mangrove Areas of Langkawi Islands”. Malaysian Journal of Science, vol. 24, Apr. 2005, pp. 69-75, https://ejournal.um.edu.my/index.php/MJS/article/view/8822.