Prokopenko А. А. Prokopenko А. А. Key strategies and tactics in Barack Obama presidential discourse. Philological Treatises, [S. l.], v. 7, n. 2, p. 116–122, 2020. Disponível em: https://tractatus.sumdu.edu.ua/index.php/journal/article/view/353. Acesso em: 3 jul. 2024.