Siregar, Novita Santri. “Analysis of Marketing Strategy in Increasing Room Occupancy Rate at Hotel Sapadia Gunung Tua”. Jurnal Online Mahasiswa 1, no. 4 (September 4, 2023). Accessed May 14, 2024. http://jom.poltekparmedan.ac.id/index.php/jomph/article/view/85.