LUANGSOMBATH, S.; VONGPHACHANH, S.; PHOTHILADTH, A.; PHOMPHITHAK, C. The factors affecting learning English as a foreign language at Phoubachieng Upper Secondary School. Souphanouvong University Journal Multidisciplinary Research and Development , [S. l.], v. 6, n. 2, p. 1–9, 2020. Disponível em: http://www.su-journal.com/index.php/su/article/view/259. Acesso em: 17 jan. 2026.