Jayabalan, J., P. Fong, U. Yean, T. Ling, S. Kandasamy, and C. Yoke. “A Study on Impact of Minimum Wage on Sustainability and Competitiveness of the Timber Industry”. Journal of Progressive Research in Social Sciences, Vol. 7, no. 3, Apr. 2018, pp. 562-75, http://scitecresearch.com/journals/index.php/jprss/article/view/1470.