Assomadi, Sumaiyah, Doungrut Wattanakitkrilert, Kanaungnit Pongthavornkamol, and Chatkanok Dumavibhat. 2019. “Factors Affecting Sleep Quality in Patients With Chronic Heart Failure”. Nursing Science Journal of Thailand 37 (2):43-59. https://he02.tci-thaijo.org/index.php/ns/article/view/192585.