Stańko, Aneta. “The Level of Education Expenditure in the European Union Member States”. Zeszyty Naukowe SGGW - Ekonomika i Organizacja Gospodarki Żywnościowej, no. 73 (February 28, 2009): 83–93. Accessed October 23, 2025. https://eiogz.sggw.edu.pl/article/view/8019.