E. Astuti, S. Ghozi, and D. I. L. Wijayani, “PENGARUH NON PERFORMING LOAN (NPL), LOAN TO DEPOSIT RATIO (LDR) DAN RASIO BIAYA OPERASIONAL PENDAPATAN OPERASIONAL (BOPO) TERHADAP RETURN ON ASSETS (ROA) PADA BANK BUMN PERIODE 2012-2019 ”, J Tugas Akhir Mhs Poltekba, vol. 2, pp. 351-359, Feb. 2021.