Lashko, Myhaylo. “Grinchenkoʼs Pedagogical and Enlightening Activity: Historiography of the Research”. Pedagogical Discourse0, no. 15 (October 7, 2013): 411-416. Accessed April 20, 2024. http://ojs.kgpa.km.ua/index.php/peddiscourse/article/view/742.