MALAHOVA, Ludmila; BOGE, Iveta. FOREIGN LANGUAGE LEARNING IN OPTIONAL STUDY COURSES AT LASE. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, Rezekne, Latvia, v. 3, p. 615–624, 2017. DOI: 10.17770/sie2017vol3.2267. Disponível em: https://archive-journals.rtu.lv/sie/article/view/1595.. Acesso em: 11 mar. 2026.