WILLIAM ANDREW SECTIONARDO. Konsep Efficient Breach dalam Hukum Perjanjian: Tinjauan Ekonomi atas Wanprestasi: Penelitian. Jurnal Pustaka Cendekia Hukum dan Ilmu Sosial, [S. l.], v. 4, n. 1, p. 1079–1091, 2026. DOI: 10.70292/pchukumsosial.v4i1.276. Disponível em: https://pchukumsosial.org/index.php/pchs/article/view/276. Acesso em: 15 jun. 2026.