Cabral, K. A., K. D. Grageda, C. Ongsitco Jr., and D. G. Cabacang. “A Review on the Unsustainable Operations of Major Fast-Food Chains in the Philippines”. Ascendens Asia Singapore – Union Christian College Philippines Journal of Multidisciplinary Research Abstracts, vol. 5, no. 1, Sept. 2023, p. 14, https://ojs.aaresearchindex.com/index.php/aasguccphjmra/article/view/12595.