PLOETTNER, Joan; TRESSERRAS, Eva. An interview with Yrjö Engeström and Annalisa Sannino on activity theory. Bellaterra: Journal of Teaching and Learning Language and Literature, [S. l.], v. 9, n. 4, p. 87–98, 2016. DOI: 10.5565/rev/jtl3.709. Disponível em: https://revistes.uab.cat/jtl3/article/view/v9-n4-ploettner-tresserras. Acesso em: 19 aug. 2026.