UNITED NATION. (2002). GLOBAL ENVIRONMENT OUTLOOK 3-CD. EARTHSCAN.
芝加哥风格引文UNITED NATION. GLOBAL ENVIRONMENT OUTLOOK 3-CD. LONDON: EARTHSCAN, 2002.
MLA引文UNITED NATION. GLOBAL ENVIRONMENT OUTLOOK 3-CD. EARTHSCAN, 2002.
警告：这些引文格式不一定是100％准确.
APA引文