Ab Rahman, Azmanirah, et al. “KOMPETENSI PELAJAR MEMBINA PENGATURCARAAN KAWALAN LOGIK (PLC) BAGI KURSUS AUTOMASI INDUSTRI DI KOLEJ VOKASIONAL”. Online Journal for TVET Practitioners, vol. 3, no. 2, Sept. 2018, https://penerbit.uthm.edu.my/ojs/index.php/oj-tp/article/view/4852.