Insin, N., Chomchaipol, J., Maliton, A., Chompoochan, A., Wonginta, N. and Singsudee, T. (2021) “Volunteering behaviors and motivation on volunteering of older adults in Amphoe Mueang Sakon Nakhon”, UBRU Journal for Public Health Research, 10(2), pp. 118–127. available at: https://he02.tci-thaijo.org/index.php/ubruphjou/article/view/249019 (accessed: 28 September 2026).