Chamroonsawasdi, Nattanand, Nanttaporn Pattarabuddh, and Srirat Lormphongs. “Effectiveness of Diaphragmatic Breathing Exercise Program Resulting in Improved Quality of Sleep and Reduced Fatigue among Registered Nurses: Case study in a Hospital, Chonburi Province”. Journal of The Royal Thai Army Nurses 24, no. 3 (December 10, 2023): 214–222. accessed October 10, 2026. https://he01.tci-thaijo.org/index.php/JRTAN/article/view/262669.