Somjit, Klaojai, Panate Pukrittayakamee, Pinyo Sriveerachai, Pratamaporn Chanthong, and Kamonporn Wannarit. “Validity and reliability of the Thai version of the Prolonged Grief Disorder-13-Revised scale (Thai PG-13-R) in bereaved relatives”. Journal of the Psychiatric Association of Thailand 68, no. 1 (March 29, 2023). accessed February 17, 2025. https://he01.tci-thaijo.org/index.php/JPAT/article/view/260022.