Hilbert, D. (2017) “O pojęciu liczby”, Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia, 4, pp. 199–202. Available at: https://didacticammath.uken.krakow.pl/article/view/3672 (Accessed: 23 November 2024).