VANNINI, I. Experimental empirical research in pedagogy. Theoretical reflections and methodological order. Ricerche di Pedagogia e Didattica. Journal of Theories and Research in Education, [S. l.], v. 4, n. 1, 2009. DOI: 10.6092/issn.1970-2221/1549. Disponível em: https://rpd.unibo.it/article/view/1549. Acesso em: 24 may. 2022.