Lubis, Satia Negara, and Arga Abdi Rafiud Darajat Lubis. “Enhancing Indonesian Coffee Trade: Strategies for Navigating and Reducing Trade Barriers”. International Journal of Innovative Research and Scientific Studies 7, no. 3 (May 31, 2024): 1248–1267. Accessed July 2, 2024. https://ijirss.com/index.php/ijirss/article/view/3231.