K. Aprilia and P. P. Rahmi, “Pengaruh Biaya Operasional Pendapatan Operasional (BOPO), Net Profit Margin (NPM), dan Inventory Turnover (ITO), terhadap Return On Assets (ROA) Pada Hotel X di Kota Bandung”, RIGGS, vol. 4, no. 4, pp. 5034–5042, Dec. 2025.