TUAN, H. V. Some characteristics about the process of Nguyen empiers established Vietnam Southwestern Sea and Islands Area’s Sovereignty in the 18th Century. International journal of health sciences, [S. l.], v. 6, n. S2, p. 17–34, 2022. DOI: 10.53730/ijhs.v6nS2.4988. Disponível em: https://sciencescholar.us/journal/index.php/ijhs/article/view/4988. Acesso em: 10 may. 2026.