Source:Reif, John, Christa Bruns, and Kimberly Lower. “Cancer of the Nasal Cavity and Paranasal Sinuses and Exposure to Environmental Tobacco Smoke in Pet Dogs.” American Journal of Epidemiology. 147(5). 1998. Web.
Source:WILLIE EVANS v. LORILLARD TOBACCO COMPANY. Superior Court of Massachusetts, County. WILLIE EVANS, as Executor of the Estate of Marie R. Evans, Plaintiff v. LORILLARD TOBACCO COMPANY, Defendant ; CIVIL ACTION NO: 2004–2840–B ; September 01, 2011