Puay Liu, Ong, and Sharina Abd Halim. “PLANNING FOR HERITAGE TOURISM: THE CASE OF LANGKAWI GEOPARK”. PLANNING MALAYSIA 1, no. 1 (July 30, 2011). Accessed October 18, 2026. https://www.planningmalaysia.org/index.php/pmj/article/view/SI-1-7.