Analysis of information sources in references of the Wikipedia article "Tourism in Poland" in English language version.
Travelers' Choice 2014 Update: 1.Krakow, 2.Warsaw, 3.Wroclaw, 4.Poznan, 5.Bialystok, 6.Sopot, 7.Zakopane, 8.Lodz, 9.Szczecin, 10.Gdynia.