Rachwał, Tomasz, Joanna Kudełko, Mariola Tracz, Krzysztof Wach, and Wioletta Kilar. 2008. “The Project of the Base for Curriculum of ‘“Basis for Entrepreneurships’” Classes in General High Schools, Profiled High Schools and Technical High Schools”. Entrepreneurship – Education 4 (January):322-34. https://doi.org/10.24917/20833296.4.32.