Chai Peng, L. and Hakif Hassan, M. (2005) “Contributions from the Geology of Northeast Langkawi to Refining the Mid-Palaeozoic Stratigraphy and Palaeogeography of Peninsular Malaysia”, Malaysian Journal of Science, 24, pp. 15–23. Available at: https://ejournal.um.edu.my/index.php/MJS/article/view/8814 (Accessed: 10 May 2024).