Citazione Stile APA (7a Edizione)

World Health Organization. (2007). Protection from exposure to second-hand tobacco smoke: Policy recommendations. World Health Organization.

Citazione stile Chigago Style (17a edizione)

World Health Organization. Protection from Exposure to Second-hand Tobacco Smoke: Policy Recommendations. Geneva, Switzerland: World Health Organization, 2007.

Citatione MLA (9a ed.)

World Health Organization. Protection from Exposure to Second-hand Tobacco Smoke: Policy Recommendations. World Health Organization, 2007.