Napitupulu, Diana R. W. “Binding Sale and Purchase Agreement and Power of Attorney Over Land in the Perspective of the Principle of Horizontal Separation”. Jurnal Smart Hukum (JSH) 3, no. 2 (December 2, 2024): 200–205. Accessed December 22, 2024. https://ejournal.ipinternasional.com/index.php/jsh/article/view/1153.