Muhammad Rafif Adiguna, & Oktofa Yudha Sudrajad. (2025). Determining the Optimal Capital Structure of PT. Krakatau Steel Tbk (Persero). El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam, 6(5), 1654 –. https://doi.org/10.47467/elmal.v6i5.7241