Anuar, A. ., M. H. A. . Phesal, A. A. . Zakaria, G. C. . Hock, S. . Thiruchelvam, D. N. T. . How, M. F. A. . Ghani, and K. S. M. . Sahari. “Learning Basic Mechatronics through Helicopter Workshop”. International Journal of Asian Social Science, vol. 4, no. 2, Feb. 2014, pp. 320-5, https://archive.aessweb.com/index.php/5007/article/view/2635.