Development of geotourism in Poland and examples of geosites from the \emph {Catalogue of geotouristic objects in Poland} / Tadeusz SŁOMKA, Marek DOKTOR, Andrzej JONIEC, Alicja KICIŃSKA, Wojciech MAYER, Elżbieta SŁOMKA // Przegląd Geologiczny ; ISSN 0033-2151. — 2008 vol. 56 spec. iss. 8/1: Geotourism in Poland, s. 588–594. — Bibliogr. s. 594. — tekst: https://www.pgi.gov.pl/images/stories/przeglad/pg_2008_08_01_07.pdf

Geotouristic attractions of national parks in southern Poland / SŁOMKA Tadeusz, SŁOMKA Elżbieta // W: Inaugural Global Geotourism conference Australia 2008 : 17–20 August 2008 Fremantle, Western Australia, Australia : conference proceedings / eds. Ross Dowling, David Newsome. — [Australia] : Promaco Conventions PTY Ltd., 2008. — Na okł. dod.: Discover the earth beneath our feet. — ISBN10: 1 86308 146 1. — S. 463

Nature conservation versus tourist flow in the national parks in Poland / Tadeusz SŁOMKA, Elżbieta SŁOMKA, Wojciech MAYER // W: GEOTOUR 2008 : “Geotourism and mining heritage” : 4\textsuperscript{nd} international conference : 26–28 June 2008, Kraków, Poland / ed. Tadeusz Słomka ; AGH University of Science and Technology. Faculty of Geology, Geophysics and Environmental Protection, IAGt – International Association for Geotourism. — [Kraków : AGH UST], [2008]. — ISBN: 978-83-88927-17-1. — S. 65–66