Muhammad Yusuff, Nurul Husna, Mohamad Khairul Anuar Mohd Rosli, and Norasmahani Hussain. “Perkembangan Pengeluaran Getah Di Negeri Kedah, 1970-1990: The Development of Rubber Production in the State of Kedah, 1970-1990”. SEJARAH: Journal of the Department of History 31, no. 2 (December) (December 15, 2022). Accessed February 28, 2026. https://ejournal.um.edu.my/index.php/SEJARAH/article/view/39270.