Bida, Olena, and Lyudmyla Prokopenko. 2014. “Korczak Janusz, Makarenko Anton, Zaharenko Olexandr – Knights of Humane Pedagogy”. Journal of Vasyl Stefanyk Precarpathian National University 1 (2-3):263-66. https://doi.org/10.15330/jpnu.1.2-3.263-266.