Citazione APA

Choi, K., & Boyle, R. G. (2013). Minnesota smokers’ perceived helpfulness of 2009 federal tobacco tax increase in assisting smoking cessation: A prospective cohort study. BioMed Central.

Stile di citazione Chicago

Choi, Kelvin, e Raymond G. Boyle. Minnesota Smokers’ Perceived Helpfulness of 2009 Federal Tobacco Tax Increase in Assisting Smoking Cessation: A Prospective Cohort Study. BioMed Central, 2013.

Citazione MLA

Choi, Kelvin, e Raymond G. Boyle. Minnesota Smokers’ Perceived Helpfulness of 2009 Federal Tobacco Tax Increase in Assisting Smoking Cessation: A Prospective Cohort Study. BioMed Central, 2013.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.