Siahaan, U. M. (2021) “THE USE OF US’ INDEX THEORY TO ENHANCE QUALITY OF LOAN WITHIN BANKING INDUSTRY AND FINANCIAL INSTITUTIONS CASE STUDY: BANK ABC”, Seminar Ilmiah Nasional Teknologi, Sains, dan Sosial Humaniora (SINTESA), 3. doi: 10.36002/snts.v0i0.1273.