Rizky, Aditya, Sunardi, and Joko Setiono. “Lex Mercatoria As Substantive Applicable Law of International Sale and Purchase Contracts”. International Journal of Law and Politics Studies 5, no. 2 (April 18, 2023): 80–86. Accessed January 28, 2026. https://al-kindipublishers.org/index.php/ijlps/article/view/5239.