Federal Ministry of Consumer Protection, Food and Agriculture. (2003). Federal Organic Farming Scheme.
Citazione stile Chigago Style (17a edizione)Federal Ministry of Consumer Protection, Food and Agriculture. Federal Organic Farming Scheme. 2003.
Citatione MLA (9a ed.)Federal Ministry of Consumer Protection, Food and Agriculture. Federal Organic Farming Scheme. 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.