วงค์ชัย ช, มนตรี ว. The Development of Application for Hearty to The Elderly. RJST [internet]. 2021 Jan. 31 [cited 2026 Sep. 10];2(3):47-60. available from: https://ph02.tci-thaijo.org/index.php/RJST/article/view/243477