LUO, Jianxin; LUO, Hongchun. Discussing the Construction of Gratefulness Education in Modern Times. International Journal for Innovation Education and Research, Dhaka, Bangladesh, v. 3, n. 10, p. 32–36, 2015. DOI: 10.31686/ijier.vol3.iss10.442. Disponível em: https://scholarsjournal.net/index.php/ijier/article/view/442.. Acesso em: 18 may. 2024.