Y. Yuanis, W. Wasito, and F. R. . Ningsih, “Analysis of the Profit and Loss Statement to Determine the Profit Contribution of the Room Department at Mustika Tuban Hotel: Analisa Laporan Laba Rugi Untuk Menentukan Kontribusi Laba Departemen Kamar Pada Hotel Mustika Tuban”, acopen, vol. 2, Aug. 2020.