Tubay, Jerwin B., and Myra V. De Leon. “Website Sustainability Disclosure Analysis: A Case of Publicly-Listed Mining Companies in the Philippines”. International Journal of Energy Economics and Policy 10, no. 1 (November 13, 2019): 23–30. Accessed May 3, 2024. https://econjournals.com/index.php/ijeep/article/view/8347.