Oleksandr Dovzhenko Hlukhiv National Pedagogical University Bulletin: scientific papers collection. Vol. 30 /Oleksandr Dovzhenko Hlukhiv National Pedagogical University ; editorial board : O I. Kurok (editor-in-chief) [and others]. – Hlukhiv : O. Dovzhenko HNPU, 2016. – 80 p. (Series: Pedagogical Sciences; Vol. 30)