Burhan, Muhammad Iswal, Arifin Ahmad, and Mahmud Alimuddin. “An Analysis of the Management Problem of Working Practices of Industry in Vocational High School”. International Review of Management and Marketing 7, no. 3 (July 12, 2017): 72–76. Accessed March 28, 2024. https://econjournals.com/index.php/irmm/article/view/4451.