Kusjono, Gatot, and Siska Defitarani. “Pengaruh Debt To Equity Ratio Dan Debt To Asset Ratio Terhadap Return On Asset Pada PT Kalbe Farma Tbk Periode 2009-2019”. Jurnal Disrupsi Bisnis 5, no. 2 (March 27, 2022): 140–150. Accessed July 31, 2024. https://openjournal.unpam.ac.id/index.php/DRB/article/view/19219.