Choknumchaisiri, K. “Motivational Factors Affecting the Work Performance Efficiency of Personnel at the Metropolitan Health and Wellness Institution”. REGIONAL HEALTH PROMOTION CENTER 9 JOURNAL, vol. 21, no. 1, Sept. 2026, pp. 155-64, https://he02.tci-thaijo.org/index.php/RHPC9Journal/article/view/283280.