ROHALI, Mediana Cesyanti Ajeng; DWIRIDOTJAHJONO, Jojok. Peranan Implementasi Standar Operasional Prosedur (SOP) Meningkatkan Efisiensi dan Efektivitas Operasional pada PT. Nusatama Berkah, Tbk. As-Syirkah: Islamic Economic & Financial Journal, [S. l.], v. 3, n. 3, p. 1331 – 1337, 2024. DOI: 10.56672/tbtpty63. Disponível em: https://journal-ikadi.com/ojs/index.php/assyirkah/article/view/295. Acesso em: 25 may. 2026.