SHAHID, J.; ANWER ZOON, A.; TAHIR, A. Using Placebos in Language Teaching: A Case Study of ESL Classroom. Pakistan Languages and Humanities Review, Gujranwala, Pakistan, v. 6, n. 2, p. 1079–1089, 2022. DOI: 10.47205/plhr.2022(6-II)91. Disponível em: https://ojs.plhr.org.pk/journal/article/view/125. Acesso em: 7 may. 2024.