Biljana Čubrović i Katarina Petrović, Flex Your English. Annals of the Faculty of Philology, [S. l.], v. 34, n. 2, p. 261–264, 2022. Disponível em: http://147.91.76.70/index.php/anali/article/view/analiff-2022-34-2-15. Acesso em: 17 dec. 2025.