SUPE, Olga; KAUPUZS, Aivars. The Effectiveness of Project –Based Learning in the Acquisition of English as a Foreign Language. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, Rezekne, Latvia, v. 2, p. 210–218, 2015. DOI: 10.17770/sie2015vol2.458. Disponível em: https://archive-journals.rtu.lv/sie/article/view/1089.. Acesso em: 11 mar. 2026.