Sangboonruang, N., C. Rattanawimol, and N. Songthai. “Predicting Factors of Post-Operative Delirium in Abdominal Surgery’s Older Adult”. Journal of The Royal Thai Army Nurses, vol. 26, no. 1, Apr. 2025, pp. 202-10, https://he01.tci-thaijo.org/index.php/JRTAN/article/view/274751.