1. The health consequences of using smokeless tobacco: A report of the Advisory Committee to the Surgeon General (DHHS Publication No. NIH 86-2874);Advisory Committee to the Surgeon General,1986
2. Patterns of smokeless tobacco use by young adolescents;Gottlieb;Pediatrics,1993
3. National Cancer Institute (NCI). (1992). Smokeless tobacco or health: An international perspective (NIH Publication 92-3461, Monograph 2). Bethesda, MD: Author.
4. Trends in smokeless tobacco use among men in four states, 1988 through 1993;Nelson;American Journal of Public Health,1996
5. Smokeless tobacco;Spangler;American Family Physician,1995