The Economic Impact of Clean Indoor Air Laws: CA-A Cancer Journal for Clinicians (2007)
Action on Smoking and Health (ASH) U.K.—International Trends on Smoke-free provision
World Health Organization: Business as Usual for Smoke-free Places
Americans for Non-Smokers' Rights
European Smoke-free Partnership
Ireland's Office of Tobacco Control
The United Kingdom's National Health Service Smoke-free Resources
U.S. Centers for Disease Control and Prevention Secondhand Smoke Facts
World Health Organization Tobacco Atlas