Karpych, I. “Periodicals Ukraine As a Means to Promote the Theory and Practice of Childrenʼs Movement in the 20ʼs – Early 30-Ies of XX Century”. Pedagogical Discourse, no. 15, Sept. 2013, pp. 315-20, https://ojs.kgpa.km.ua/index.php/peddiscourse/article/view/721.