Sibarani, Realdi, and Sucitra Dewi. “Pengaruh Tingkat Suku Bunga Dan Cost Efficiency Ratio Terhadap Net Profit Margin Pada Perusahaan Perbankan Yang Terdaftar Di Bursa Efek Indonesia Periode 2023–2025”. RIGGS: Journal of Artificial Intelligence and Digital Business 5, no. 2 (July 31, 2026): 23412–23419. Accessed October 29, 2026. https://journal.ilmudata.co.id/index.php/RIGGS/article/view/12358.