Zhou, J., P. Jullamate, and K. Piboon. “Factors influencing depression among older adults living alone in the community, Hangzhou, China”. Journal of Public Health and Health Sciences Research, vol. 8, no. 2, Aug. 2026, pp. 126-43, https://he01.tci-thaijo.org/index.php/JPHSR/article/view/286468.