Stefko, Olga. “INVESTMENTS AND FINANCIAL SOURCES VERSUS CHANGES IN FARMS GROWING VEGETABLES”. Acta Scientiarum Polonorum. Oeconomia 6, no. 2 (June 30, 2007): 131-142. Accessed April 18, 2025. https://js.wne.sggw.pl/index.php/aspe/article/view/3729.