Stevani Natalina, and Yudha Wardhani. 2025. “UPAYA PENINGKATAN KUALITAS LAYANAN LAUNDRY MELALUI PENGELOLAAN KELUHAN TAMU OLEH LAUNDRY ATTENDANT DI BEVERLY HOTEL BATAM ”. Journal of Innovation Research and Knowledge 5 (7):7753-66. https://mail.bajangjournal.com/index.php/JIRK/article/view/11812.