“Analisis Strategi Manajemen Sumber Daya Manusia Dalam Peningkatan Kualitas Pelayanan Umrah Pada PT. Mambaul Khairat Tour & Travel Kabupaten Ketapang”. PRODUCTIVITY: Journal of Integrated Business, Management, and Accounting Research 3, no. 1 (February 11, 2026): 44–65. Accessed June 19, 2026. https://ejournal.limm-pub.id/index.php/productivity/article/view/161.