STEFANOVA, A.; ZABUNOV, G. Enhancing Student Motivation in ESP by Increasing the Level of Engagement: A Proposed Model. English Studies at NBU, Sofia, Bulgaria, v. 6, n. 2, p. 201–216, 2020. DOI: 10.33919/esnbu.20.2.2. Disponível em: https://ojs.nbu.bg/index.php/ESNBU/article/view/419. Acesso em: 9 dec. 2024.