VERTINA, Annisa Sophia; BACHTIAR, Maryati; HASANAH, Ulfia; HANIFAH, Mardalena. WANPRESTASI DALAM PERJANJIAN JUAL BELI KACAMATA ANTARA PENJUAL DAN PEMBELI DI OPTIK CITRA PEKANBARU. Jurnal Pahlawan, [S. l.], v. 7, n. 2, p. 15–24, 2024. DOI: 10.31004/jp.v7i2.42720. Disponível em: https://journal.universitaspahlawan.ac.id/index.php/jp/article/view/42720. Acesso em: 21 feb. 2026.