1. U.S. Bureau of the Census: Available: http://www.census.gov/pubinfo/www/multimedia/Race-Hisp20Q4.html. Accessed 6-15-2006
2. U.S. Bureau of the Census: Current population reports, P20–540. The Asian and Pacific Islander Population in the United States: March 2002. Washington, DC: Dept. of Commerce; 2003 May
3. U.S. Bureau of the Census: Available: http://www.census.gov/Press-Release/www/2000/cbOO-05.html. Accessed 6-15-2006)
4. Current population reports, P25–1095 U.S. population estimates by age, sex, race, and Hispanic origin: 1980 to 1991;U.S. Bureau of the Census,1993
5. Tobacco use among high school students;Centers for Disease Control and Prevention;MMWR,1998