Darsono, Febri Budi, et al. “Visual Inspection and Non-Destructive Test (NDT) on ASTM A36 Welded Joints Produced by GMAW”. International Journal of Integrated Engineering, vol. 16, no. 5, Aug. 2024, pp. 114-25, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/15410.