Zawadka, J. “EVOLUTION OF AGRITOURISTIC ACTIVITY IN POLAND AND TYPOLOGY OF RURAL TOURISM FARMS”. Acta Scientiarum Polonorum. Oeconomia, Vol. 9, no. 4, Dec. 2010, pp. 627-38, https://js.wne.sggw.pl/index.php/aspe/article/view/3988.