KONECKA-SZYDŁOWSKA, Barbara, ZUZAŃSKA-ŻYŚKO, Elżbieta and SZMYTKIE, Robert. Role of Services in the Economies of Small Towns of Silesia Region and Wielkopolskie Voivodehip. Bulletin of Geography. Socio-economic Series. Online. 8 December 2010. No. 14, p. 51–62. [Accessed 7 July 2024]. DOI 10.1515/v10089-010-0014-1.