http://encyklopedia.pwn.pl/ http://pl.wikipedia.org/wiki/Holandia http://www.turystyka-holandia.ezin.pl/ http://www.panstwaeuropy.prv.pl/ http://europa.eu.int/ http://www.odyssei.com/pl/travel/holandia.php http://www.classbrain.com http://www.hillandknowlton.be/dytch_presidency_2004/EU http://www.nationsencyclopedia.com http://www.hridir.org/countries/netherlands http://www.infoplease.com http://bbc.co.uk http://holland.com/us/nijtje.html http://jan-van-der-woning.nl/nederlands/haar/quicktime/intro.html
Books: Holandia-Pascal (Martin Dunford, Jack Holland, Phil Lee)
