1.
PARYSEK, Jerzy and MIERZEJEWSKA, Lidia. Income and Expenditure of the Polish Population in 2006 (An analysis of Regional Diversification). Bulletin of Geography. Socio-economic Series. Online. 5 July 2010. No. 13, p. 89–102. [Accessed 30 June 2024]. DOI 10.1515/v10089-010-0007-0.