Yassin, Jain. “The Analysis of Health Expenditure Determinates in Selected Asian Countries: Does Environmental Externalities Matter for Health Expenditure?”. American Journal of Economics and Business Management 2, no. 1 (March 28, 2019): 61–71. Accessed April 27, 2024. https://globalresearchnetwork.us/index.php/ajebm/article/view/46.