Federal Ministry of Consumer Protection, Food and Agriculture. (2003). Federal Organic Farming Scheme.
芝加哥风格引文Federal Ministry of Consumer Protection, Food and Agriculture. Federal Organic Farming Scheme. 2003.
MLA引文Federal Ministry of Consumer Protection, Food and Agriculture. Federal Organic Farming Scheme. 2003.
警告：这些引文格式不一定是100％准确.