Martinus, Martinus, and Rosita Suryaningsih. “Pengaruh Ukuran Perusahaan, Debt to Equity Ratio, Return on Equity, Produktivitas Dan Current Ratio Terhadap Peringkat Obligasi”. Ultimaccounting Jurnal Ilmu Akuntansi 6, no. 2 (December 1, 2014): 56-76. Accessed May 3, 2024. https://ejournals.umn.ac.id/index.php/Akun/article/view/186.