World Health Organization. (1998). Guidelines for drinking - water quality: Health Criteria and other supporting information (second.). World Health Organization.
芝加哥风格引文World Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. Geneva: World Health Organization, 1998.
MLA引文World Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. World Health Organization, 1998.
警告：这些引文格式不一定是100％准确.