Pečiulienė, L. 2019. Competencies of Pricipals of Private Early Childhood Educational Institutions and their Importance: Stakeholder Opinion Analysis. Jaunųjų mokslininkų darbai. 49, 1 (Jul. 2019), 8–15. DOI:https://doi.org/10.21277/jmd.v49i1.217.