TRUNG, Nguyen Lan; HUNG, Nguyen Viet. MODELS FOR ENHANCING THE FOREIGN LANGUAGE PROFICIENCY OF OFFICIALS AND OFFICERS IN THE CUSTOMS, FOREIGN RELATIONS, TOURISM AND BORDER GUARDS SECTORS IN VIETNAM’S NORTHERN BORDER REGIONS: FROM PRACTICE TO KEY PRINCIPLES. VNU Journal of Foreign Studies, [S. l.], v. 34, n. 6, 2018. DOI: 10.25073/2525-2445/vnufs.4331. Disponível em: https://jfs.ulis.vnu.edu.vn/index.php/fs/article/view/4331. Acesso em: 21 nov. 2024.