"Marcinkiewicz i złamane sumienie" [Marcinkiewicz and broken conscience]. Dziennik.pl (in Polish). 24 February 2009. Archived from the original on 1 March 2009. Retrieved 2 April 2009.
"Słownik IV RP" [Political vocabulary of the 4th Republic of Poland]. Gazeta.pl (in Polish). Archived from the original on 14 February 2012. Retrieved 9 December 2017.
"Marcinkiewicz i złamane sumienie" [Marcinkiewicz and broken conscience]. Dziennik.pl (in Polish). 24 February 2009. Archived from the original on 1 March 2009. Retrieved 2 April 2009.
Niklewicz, Konrad; Pawlicki, Jacek (17 December 2005). "Marcinkiewicz o budżecie UE: yes, yes, yes!" [Marcinkiewicz on the EU budget: yes, yes, yes!]. Wyborcza.pl (in Polish). Archived from the original on 12 May 2011. Retrieved 9 December 2017.
"Słownik IV RP" [Political vocabulary of the 4th Republic of Poland]. Gazeta.pl (in Polish). Archived from the original on 14 February 2012. Retrieved 9 December 2017.
Niklewicz, Konrad; Pawlicki, Jacek (17 December 2005). "Marcinkiewicz o budżecie UE: yes, yes, yes!" [Marcinkiewicz on the EU budget: yes, yes, yes!]. Wyborcza.pl (in Polish). Archived from the original on 12 May 2011. Retrieved 9 December 2017.