Usman Efendi Marpaung. “Perspektif UUPT Terkait Asas Hukum Terang Dan Tunai Perjanjian Jual-Beli Saham”. Jurnal Smart Hukum (JSH) 1, no. 1 (September 28, 2022): 01–08. Accessed April 18, 2024. https://ejournal.ipinternasional.com/index.php/jsh/article/view/105.