Fahruroji, Dede. “GROSS OPERATING PROFIT (GOP) ACHIEVEMENT POSITIVE STRATEGY IN THE NEW NORMAL ERA (Case Study at Swiss Belresidences Hotel Kalibata Jakarta): Case Study at Swiss Belresidences Hotel Kalibata Jakarta”. JPIM (Jurnal Penelitian Ilmu Manajemen) 8, no. 2 (Juni 13, 2023): 226–237. Diakses Juni 23, 2024. https://jurnalekonomi.unisla.ac.id/index.php/jpim/article/view/1595.