http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Roman Ingarden and contemporary Polish aesthetics
Roman Ingarden a współczesna estetyka polska
ed. by Piotr Graff and Sław Krzemień-Ojak ; transl. into Engl. by Piotr Graff et al.] ; Polish Academy of Sciences. Institute of Philosophy and Sociology.