World Health organization. (2006). Guidelines for drinking - water quality: Recommendations. World Health Organization.
芝加哥风格引文World Health organization. Guidelines for Drinking - Water Quality: Recommendations. Geneva: World Health Organization, 2006.
MLA引文World Health organization. Guidelines for Drinking - Water Quality: Recommendations. World Health Organization, 2006.
警告：这些引文格式不一定是100％准确.