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Zeszyty Naukowe KUL > 2014 > 57 > 2 > 81-103
Filozofia (Philosophy) > 2018 > 73 > 8 > 647 – 659
Multidisciplinary Journal of School Education > 2018 > 13 > 13-31
Filozofia (Philosophy) > 2016 > 71 > 10 > 858 – 868
European Journal of Open, Distance and E-Learning > 2014 > 17 > 1 > 227-237
Studia Gilsoniana > 2014 > 3: supplement > 605-617
Studia Gilsoniana > 2014 > 3: supplement > 455-484