What information must signatories provide when signing the proposal?

Art. 63 p. 4 of the Law on Nationwide Referendum

Art. 9 p. 2 of the Law on the manner of executing legislative initiative by the citizens adopted on 24 June 1999

Law on Nationwide Referendum adopted on 14 March 2003, Article 63

http://pkw.gov.pl/g2/i/00/8.pdf (in English - but not updated)

http://isap.sejm.gov.pl/DetailsServlet?id=WDU20030570507 (in Polish – the Parliament’s website)

Law on the manner of executing legislative initiative by the citizensadopted on 24 June 1999, Article 9

http://www.sejm.gov.pl/prawo/inicjat.htm (in Polish - the Parliament’s website)