Ramos, Karin Adriane Henschel Pobbe. 2016. “The Teaching of Portuguese As a Foreign Language in the Virtual Context of Teletandem: Linguistic and Discursive Aspects”. Estudos Linguísticos (São Paulo. 1978) 41 (2):539-52. https://revistas.gel.org.br/estudos-linguisticos/article/view/1178.