Suparti, S., J. Suroso, and A. Asiandi. “Analysis of Factors Affecting the Sleep Quality of Patients in Intensive Care Unit”. Proceedings of the International Conference on Nursing and Health Sciences, Vol. 1, no. 1, Dec. 2020, pp. 99-06, http://jurnal.globalhealthsciencegroup.com/index.php/PICNHS/article/view/299.