Boonchuay, Krissanabhat. 2022. “GUIDELINES DEVELOPING RECREATION ACTIVITY AND TOURISM OF THE ELDERLY IN SAMUT SAKHON PROVINCE”. Academic Journal of Thailand National Sports University 14 (3). Chonburi, Thailand:71-82. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/251416.