Geske, A. and Rečs, N. 2019. THE IMPACT OF HEADMASTER’S LEADERSHIP PRACTICE ON THE FORMATION OF A PROFESSIONAL LEARNING COMMUNITY AT SCHOOL. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference. 2, (May 2019), 90–105. DOI:https://doi.org/10.17770/sie2019vol2.3816.