MEDIAWATI, Noor Fatimah; PURWANINGSIH, Sri Budi. Buku Ajar Hukum Kontrak Dan Perikatan. Umsida Press, [S. l.], p. 1–104, 2021. DOI: 10.21070/2018/978-602-5914-35-5. Disponível em: https://press.umsida.ac.id/index.php/umsidapress/article/view/978-602-5914-35-5. Acesso em: 20 jun. 2025.