“The Impact of Environmental Externalities on Commodity Price Stability: GARCH (Generalized Autoregressive Conditional Heteroskedasticity) Volatility Analysis”. Nomico 2, no. 11 (December 30, 2025): 48–57. Accessed January 16, 2026. https://ejournal-nawalaedu.com/index.php/NJ/article/view/2211.