Świderski, Edward M. 2020. «Ingarden and the Quandary of Musical Ontology . 239». в Roman Ingarden and His Times, под редакцией Dominika Czakon, Natalia Anna Michna, и Leszek Sosnowski. Poland: Księgarnia Akademicka Publishing. https://doi.org/10.12797/9788381382106.15.