Pohan, Yuli Arnida, et al. “ Pengaruh Servant Leadership Dan Loyalitas Karyawan Terhadap Kinerja Karyawan Rumah Sakit Umum Mitra Medika Medan ”. RIGGS: Journal of Artificial Intelligence and Digital Business, vol. 5, no. 2, May 2026, pp. 2238-45, doi:10.31004/riggs.v5i2.8618.