NABILASARI LESMANA, E.; YUSTIAWAN, D. G. P. CIVIL LAW ANALYSIS OF UNWRITTEN AGREEMENTS IN BUSINESS ACTIVITIES. POLICY, LAW, NOTARY AND REGULATORY ISSUES, [S. l.], v. 2, n. 2, p. 109–116, 2023. DOI: 10.55047/polri.v2i2.568. Disponível em: https://ojs.transpublika.com/index.php/POLRI/article/view/568. Acesso em: 12 mar. 2026.