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Usługi w Polsce przed integracja̜ z Europa̜
Kłosiński, Kazimierz, (1997)
Gospodarka Polski i jej sektor usług w opinii Komisji Europejskiej (Agenda 2000)
Kłosiński, Kazimierz, (1998)
Structural change in the Polish services sector in the path to the EU : economies in transition
Garcia Lopez-Berges, Victor, (2002)
Innovation in services - theoretical approach
Wyszkowska-Kuna, Joanna, (2011)
Service sector in Central and Eastern Europe and the European Union : a comparative analysis
Wyszkowska-Kuna, Joanna, (2000)
Activity of Polish service providers after Poland's accession to the European Union
Wyszkowska-Kuna, Joanna, (2007)