World Health Organization. (1993). 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, 1993.
MLA引文World Health Organization. Guidelines for Drinking - Water Quality: Recommendations. World Health Organization, 1993.
警告：这些引文格式不一定是100％准确.