SIEMASZKIEWICZ, Paweł. Organic production as a direction of development of a small family farm in Poland. Poland: Lodz University Press,2025. DOI: 10.18778/8331-935-3. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1526. Acesso em: 13 feb. 2026.