World Health Organization & ebrary, Inc. (2008). World health statistics 2008. World Health Organization.
芝加哥风格引文World Health Organization 与 Inc ebrary. World Health Statistics 2008. Geneva, Switzerland: World Health Organization, 2008.
MLA引文World Health Organization 与 Inc ebrary. World Health Statistics 2008. World Health Organization, 2008.
警告：这些引文格式不一定是100％准确.