[Jędrusik M., 2001, Izolacja jako zjawisko geograficzne, [Isolation as a Geographical Phenomenon; in Polish] Uniwersytet Warszawski, Wydział Geografii i Studiów Regionalnych, Warszawa.]Search in Google Scholar
[United Nations Environment Programme (http://islands.unep.ch/CMM.htm) – 23.07.2007.]Search in Google Scholar
[United Nations Statistical Division, Demographic and Social Statistics, Social Indicators on Population,http://unstats.un.org/unsd/demographic/products/socind/population.htm – 10.01.2007.]Search in Google Scholar
[World Tourism Organization, 2006, Compendium of Tourism Statistics, Madrid.]Search in Google Scholar