Amirullah, Aditya Sabrian, and Pardomuan Sihombing. “Determinants of Firm Value: Sustainability, Risk Business, Dividend Policy, Capital Structure, and Profitability in Telecommunication”. Journal of Sustainable Economic and Business, vol. 3, no. 2, Mar. 2026, pp. 333-45, https://doi.org/10.70550/joseb.v3i2.388.