Abdullah, Z., R. I. A. Rahman, and C. S. C. Berahim. “A Study of the Use of Vernier Calipers on Student Competence in the Department of Mechanical Engineering, Politeknik Mukah”. Politeknik & Kolej Komuniti Journal of Social Sciences and Humanities, vol. 8, no. 1, Nov. 2023, pp. 13-25, https://app.mypolycc.edu.my/journal/index.php/PMJSSH/article/view/313.