Matondang, Khairani Alawiyah, Anisa Dinda Pertiwi, Clarita Joyce Sitanggang, and Putri Uli Sitompul. “Analisis Struktur Pasar Industri Perbankan Indonesia Berdasarkan Concentration Ratio (CR4) Dan Herfindahlhirschman Index (HHI) Tahun 2024–2025”. Indonesian Journal of Multidisciplinary on Social and Technology 5, no. 1 (November 12, 2026): 875–883. Accessed November 12, 2026. https://journal.ilmudata.co.id/index.php/ijmst/article/view/14402.