S, D. D., S. Pohan, and M. Sari. “The Effect of Capital Structure, Operational Efficiency, and Firm Size on Profitability: Evidence from Transportation and Logistics Companies Listed on the Indonesia Stock Exchange (2022-2024)”. Jurnal Fokus Manajemen, Vol. 6, no. 2, May 2026, pp. 513-20, doi:10.37676/jfm.v6i2.11108.