http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Państwowe Wydawnictwo Naukowe (1951-1992)
by Władysław Tatarkiewicz ; [transl. from the Polish by Edward Rothert (chapters I-XII), Danuta Zielińska (chapters XII-XXV)].
Melbourne International Philosophy Series vol. 3