Sigalingging J, Sumiati S, Ratnawati K, Indrawati NK. The effect of supervision quality and risk management on company value mediated by operational efficiency study on financial conglomerate companies in the banking sector in Indonesia. ijirss [Internet]. 2025 Jul. 16 [cited 2025 Dec. 7];8(5):130-4. Available from: https://www.ijirss.com/index.php/ijirss/article/view/8574