Chankra C, Kespichayawattana J. The Effect of Montessori-based Activities Program on Depression among Older Persons in Social Welfare Development Center for Older Persons. JPNC [internet]. 2018 Mar. 29 [cited 2026 Sep. 14];27(1):39-50. available from: https://he01.tci-thaijo.org/index.php/pnc/article/view/117135