Aunjitsakul, W. and Udomratn, P. (2016) “Cognitive Behavioral Therapy for Insomnia (CBT-I)”, Journal of the Psychiatric Association of Thailand, 61(1), pp. 89–106. available at: https://he01.tci-thaijo.org/index.php/JPAT/article/view/54846 (accessed: 11 December 2025).