World Health Organization. (2007). Protection from exposure to second-hand tobacco smoke: Policy recommendations. World Health Organization.
芝加哥风格引文World Health Organization. Protection from Exposure to Second-hand Tobacco Smoke: Policy Recommendations. Geneva, Switzerland: World Health Organization, 2007.
MLA引文World Health Organization. Protection from Exposure to Second-hand Tobacco Smoke: Policy Recommendations. World Health Organization, 2007.
警告：这些引文格式不一定是100％准确.