1. Centers for Disease Control: Annual smoking-attributable mortality, years of potential life lost and economic costs - United States 1995-1999. Morbidity & Mortality Weekly Report. 2002, 51: 300-303.
2. Giovino GA, Pederson LL, Trosclair A: The prevalence of selected cigarette smoking behaviors by occupational class in the United States: Washington, D.C..2000, ,
3. Fagan P, King G, Lawrence D, Petrucci SA, Robinson RG, Banks D, Marable S, Grana R: Eliminating tobacco-related health disparities: Directions for future research. American Journal of Public Health. 2004, 94 (2): 211-217.
4. Nelson DE, Emont SL, Brackbill RM, Cameron LL, Peddicord J, Fiore MC: Cigarette smoking prevalence by occupation in the United States. A comparison between 1978 to 1980 and 1987 to 1990. Journal of Occupational Medicine. 1994, 36: 516-525.
5. Park H, Sprince NL, Jensen C, Whitten P, Zwerling C: Health risk factors and occupation among Iowa workers. American Journal of Preventive Medicine. 2001, 21: 203-208. 10.1016/S0749-3797(01)00353-1.