SIRITHANYAPORN, S. ส่วนหน้า. Mahachula Academic Journal, Bangkok, Thailand, v. 5, n. 2, p. (1)-(16), 2018. Disponível em: https://so04.tci-thaijo.org/index.php/JMA/article/view/163971. Acesso em: 1 may. 2024.