APA引文

world food programme. (2009). vulnerability analysis and review of the food subsidy program in egypt. world food programme.

芝加哥风格引文

world food programme. Vulnerability Analysis and Review of the Food Subsidy Program in Egypt. cairo: world food programme, 2009.

MLA引文

world food programme. Vulnerability Analysis and Review of the Food Subsidy Program in Egypt. world food programme, 2009.

警告：这些引文格式不一定是100％准确.