Nur, D.P. Emrinaldi, and Adhitya Agri Putra. “Enterprise Resource Planning and Firm Value: Case of Oil and Gas Firm in Indonesian Stock Exchange”. International Journal of Energy Economics and Policy, vol. 10, no. 6, Oct. 2020, pp. 185-9, https://econjournals.com.tr/index.php/ijeep/article/view/10044.