Kurtyka, I. “AGROTOURISM AS A FORM OF ENTREPRENEURSHIP IN THE ‘BARYCZ VALLEY’ SCENIC PARK”. Acta Scientiarum Polonorum. Oeconomia, Vol. 9, no. 2, June 2010, pp. 111-9, https://js.wne.sggw.pl/index.php/aspe/article/view/3890.