Sulaiman, Noorasiah, Ishak Yussof, Mohd Shalemy Long Ahmad, and Rahmiah Ismail. “IMPACT OF LABOUR PRODUCTIVITY OF THE NATIONAL KEY ECONOMIC AREAS (NKEAs)”. Journal of Contemporary Issues and Thought 4 (March 6, 2019): 137-155. Accessed June 23, 2021. https://ejournal.upsi.edu.my/index.php/JCIT/article/view/1017.