Sigalingging, Juliser, et al. “The Role of Good Corporate Governance in Enhancing Firm Value: Operational Efficiency As a Mediating Variable in Financial Conglomerate Banking Companies in Indonesia”. Edelweiss Applied Science and Technology, vol. 9, no. 7, July 2025, pp. 2283-96, doi:10.55214/2576-8484.v9i7.9154.