ebrary, Inc. (1999). The State of food insecurity in the world, 1999. Food and Agriculture Organization of the United Nations.
芝加哥风格引文ebrary, Inc. The State of Food Insecurity in the World, 1999. Rome, Italy: Food and Agriculture Organization of the United Nations, 1999.
MLA引文ebrary, Inc. The State of Food Insecurity in the World, 1999. Food and Agriculture Organization of the United Nations, 1999.
警告：这些引文格式不一定是100％准确.