Bórawski, Piotr. “DU PONT MODEL UTILIZATION IN PROFITABILITY ESTIMATION OF FARMS GAINING ALTERNATIVE INCOME SOURCES”. Acta Scientiarum Polonorum. Oeconomia 8, no. 4 (December 30, 2009): 5-12. Accessed May 18, 2024. https://js.wne.sggw.pl/index.php/aspe/article/view/3848.