APA引文
United Nations Environment Programme. (2006). Africa environment outlook 2: Our environment, our wealth. United Nations Environment Programme.
Chicago Style (17th ed.) Citation
United Nations Environment Programme. Africa Environment Outlook 2: Our Environment, Our Wealth. Nairobi, Kenya: United Nations Environment Programme, 2006.
MLA引文
United Nations Environment Programme. Africa Environment Outlook 2: Our Environment, Our Wealth. United Nations Environment Programme, 2006.
警告：這些引文格式不一定是100％准確.