PUURTINEN, Marjana; NIVALA, Markus; VIRTA, Arja. Visual Sources and Historical Thinking in Higher Education. Nordidactica. Journal of Humanities and Social Science Education, [S. l.], v. 5, n. 2015:4, p. 1–20, 2016. Disponível em: https://journals.lub.lu.se/nordidactica/article/view/19012. Acesso em: 15 mar. 2025.