Sikorska-Wolak, Izabella. 2010. “TOURISM IN A SOCIAL-ECONOMIC ACTIVATION OF COUNTRY AREAS (LUBELSZCZYZNA CASE STUDY)”. Acta Scientiarum Polonorum. Oeconomia 9 (4), 477-88. https://js.wne.sggw.pl/index.php/aspe/article/view/3974.