Na Songkla, Virunyupha. “FORMAT MANAGEMENT DEVELOPMENT PLAN ADMINISTRATION FOUNDATION IN THAILAND”. Journal of MCU Nakhondhat 10, no. 8 (August 29, 2023): 303–316. accessed December 6, 2025. https://so03.tci-thaijo.org/index.php/JMND/article/view/271444.