Smith, P. H., McKee, S. A., Giovino, G. A., Mazure, C. M., & Rose, J. S. (2014). What is the evidence for hardening in the cigarette smoking population? Trends in nicotine dependence in the U.S., 2002-2012. Drug and alcohol dependence, 142, 333-340.
Cita Chicago Style (17a ed.)Smith, Philip H., Sherry A. McKee, Gary A. Giovino, Carolyn M. Mazure, y Jennifer S. Rose. "What Is the Evidence for Hardening in the Cigarette Smoking Population? Trends in Nicotine Dependence in the U.S., 2002-2012." Drug and Alcohol Dependence 142 (2014): 333-340.
Cita MLA (9a ed.)Smith, Philip H., et al. "What Is the Evidence for Hardening in the Cigarette Smoking Population? Trends in Nicotine Dependence in the U.S., 2002-2012." Drug and Alcohol Dependence, vol. 142, 2014, pp. 333-340.