Puttummavong, Nungfan, Thasuk Junprasert, and Kanchana Pattrawiwat. 2021. “Ageism towards Older Parents: A Case Study of Young Adults in Thai Family”. Journal of Behavioral Science for Development 13 (1):1-24. https://so02.tci-thaijo.org/index.php/JBSD/article/view/242951.