วัฒนกุล ก.; แก้ววิภาส ธ. Front Matter. Journal of Letters, [S. l.], v. 47, n. 3, 2018. Disponível em: https://so03.tci-thaijo.org/index.php/jletters/article/view/163952. Acesso em: 2 may. 2024.