Izza, Elfa Lailatul. “NON-PHARMACOLOGICAL THERAPIES TO IMPROVE PATIENT SLEEP QUALITY IN ICU CCU: LITERATURE REVIEW”. International Conference of Kerta Cendekia Nursing Academy 1, no. 1 (August 11, 2019). Accessed June 29, 2026. https://ejournal-kertacendekia.id/index.php/ICKCNA/article/view/75.