NGAMPIRIYAKORN, G.; THAMMAWIWAT, N.; KWALAMTHAN, W. The Development of Element’s Happiness in Ongkharak Demonstration School, Srinakharinwirot University. Interdisciplinary Academic and Research Journal , Maha Sara Kham, TH., v. 2, n. 5, p. 461–480, 2022. DOI: 10.14456/iarj.2022.107. Disponível em: https://so03.tci-thaijo.org/index.php/IARJ/article/view/263659. Acesso em: 16 sep. 2026.