Margiotta, U., and R. Minello. “Pedagogical Responsibility and Educational Research: Formal, Non-Formal and Informal Sector”. Formazione & Insegnamento, vol. 17, no. 1 Suppl., Apr. 2019, pp. 9-12, https://ojs.pensamultimedia.it/index.php/siref/article/view/3306.