„APPENDIX A3: POLITICAL PARTIES“. Documentation Report(PDF). Spain (Report) (3.0 leid.). European Social Survey. 2020. p. 121. ESS10. Suarchyvuota(PDF) iš originalo 24 September 2015.
windows.net
stessrelpubprodwe.blob.core.windows.net
„APPENDIX A3: POLITICAL PARTIES“. Documentation Report(PDF). Spain (Report) (3.0 leid.). European Social Survey. 2020. p. 121. ESS10. Suarchyvuota(PDF) iš originalo 24 September 2015.