Chotikulnt, P., and T. Srivardhana. “Causal Factors Affecting Effectiveness of Phra Chulachomklao Naval Dockyard”. Journal of the Association of Researchers, vol. 22, no. 3, July 2020, pp. 54-64, https://so04.tci-thaijo.org/index.php/jar/article/view/244466.