Abdullah, U., B. Nuryadin, S. Siswoto, dan B. Hanuradjie. “Analisis Cacat Pada Sambungan Lasan Antar Material Metal Carbon Steel Dengan Metode Non Destructive Testing Radiography.”. ALHAZEN Journal of Physics, Vol. 5, no. 2, Dec. 2018, hlm. 33-37, http://journal.alhazen.id/index.php/ajop/article/view/6.