Sulaiman, Noorasiah, Zakariah Abdul Rashid, and Khalid Abdul Hamid. 2012. “Productivity Improvement in the Utilization of Domestic and Imported Inputs in Resource and Non-Resource-Based Industries: 1983–2005”. International Journal of Management Studies 19 (1):87-114. https://e-journal.uum.edu.my/index.php/ijms/article/view/10362.