1. American Tobacco. âAllies to Be Notified of Industry Youth Initiatives (Retail and Helping Youth Say No).â Legacy Tobacco Documents Library: American Tobacco, 1990, 980172294 â 5.
2. Bureau of Economic Analysis. âRegional Accounts Data Gross State Product Data.â January 2003. Accessed February 10, 2003, at http://www.bea.gov/bea/regional/gsp/.
3. Bureau of Labor Statistics. âLocal Area Unemployment Statistics.â January 2003. Accessed February 10, 2003, at http://www.bls.gov/data/home.htm.
4. Cancer Prevention and Control Program, University of California, San Diego. âThe California Tobacco Control Program: A Decade of Progress, Results from the California Tobacco Survey, 1990-1999.â Tobacco Control Section, California Department of Health Services, 2001.
5. Tracers for Assessing Exposure to Environmental Tobacco Smoke: What Are They Tracing;Daisey;Environmental Health Perspectives,1999