PES declaration of principles adopted by the PES Council on 24 November 2011 (2011)
Nebent.: Re:new, declaration of principles / PES. - Electronic ed.: [Bruxelles, 2011]. - Speicherung: 19.02.2013. - Adresse: http://www.pes.eu/sites/www.pes.org/files/declaration_of_principles_web_en_0.pdf