Nimnatipun, S. “THE PARTICIPANTING BEHAVIORS OF RECREATION ACTIVITIES UNDER THE CIRCUMSTANCES OF COVID-19 OF THE AGING SOCIETY IN NAKHON NAYOK PROVINCE”. Journal of Liberal Art of Rajamangala University of Technology Suvarnabhumi, vol. 6, no. 1, Apr. 2024, pp. 119-33, https://so03.tci-thaijo.org/index.php/art/article/view/273197.