Gaol, Jeko L, et al. “Sikap Perawat Dalam Menindaklanjuti Penilaian Early Warning Score System (Ewss) Di Rumah Sakit Santa Elisabeth Medan Tahun 2023”. Innovative: Journal Of Social Science Research, vol. 3, no. 5, Oct. 2023, pp. 2871-7, http://j-innovative.org/index.php/Innovative/article/view/5032.