Fichnová, K., Mikuláš, P., & Wojciechowski, Łukasz. (2012). Similarities and Differences between Social Networking Services in Poland and Slovakia. ANNALES UNIVERSITATIS PAEDAGOGICAE CRACOVIENSIS. STUDIA LINGUISTICA, (7). Pobrano z https://studialinguistica.uken.krakow.pl/article/view/5092