Saudi, Mohd Haizam Mohd, et al. “Experimenting the Energy Economic Variables Regarding the Long-Haul Consequences on Indonesia Using Vector Error Correction Model”. International Journal of Energy Economics and Policy, vol. 9, no. 6, Oct. 2019, pp. 503-10, https://www.econjournals.com/index.php/ijeep/article/view/8695.