Sofyan, D. and Nurhayati, N. 2020. Analisis Pengaruh Debt to Equity Ratio (DER) Terhadap Return on Asset (ROA) pada PT Semen Indonesia Tbk. Journal of Business and Economics Research (JBE). 1, 3 (Oct. 2020), 220-225. DOI:https://doi.org/10.47065/jbe.v1i3.249.