Nulay, P., Soonthorn, S., Injun , R. and Sutthisai , W. (2022) “Factors affecting on strategic Implementation of the Department of Mineral Resources, Office of Mineral Resources Regions 1-4”, Journal of Modern Learning Development, 7(8), pp. 109–133. available at: https://so06.tci-thaijo.org/index.php/jomld/article/view/256839 (accessed: 8 October 2026).