Lucknuch, Kongkiet, Thaweesak Munchawanont, Bordin Srimanee, and Somwung Srimoongkoon. 2023. “Criteria for Certification of Officer in Charge of an Engineering Watch of Merchant Marine Training Center, Marine Department”. Legal State Journal 1 (2):1-10. https://so19.tci-thaijo.org/index.php/LSJ/article/view/14.