Kmietowicz, Z. (2001). Tobacco company claims that smokers help the economy. BMJ.
Chicago Style CitationKmietowicz, Zosia. Tobacco Company Claims That Smokers Help the Economy. BMJ, 2001.
Cita MLAKmietowicz, Zosia. Tobacco Company Claims That Smokers Help the Economy. BMJ, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.