1.
Ramadhan AA, Jalinus N. The development of e-module based on learning models of self directed learning in welding subject. JPTK [Internet]. 2021 May 31 [cited 2026 Jul. 29];4(2):59-64. Available from: http://jptk.ppj.unp.ac.id/index.php/jptk/article/view/169