Efrianza, Sutoyo, Uripan , K. I., Sutomo, & Osijo , I. U. (2026). The Influence Of Leadership And Organizational Culture On Operational Efficiency Through Work Discipline at PT. Ekadharma International Tbk. International Journal of Humanity Advance, Business & Sciences (IJHABS), 3(4), 503–516. https://doi.org/10.59971/ijhabs.v3i4.1074