APA aipamena

Beard, E., Aveyard, P., Brown, J., & West, R. (2012). Assessing the association between the use of NRT for smoking reduction and attempts to quit smoking using propensity score matching. Elsevier.

Chicago Style aipamena

Beard, E., P. Aveyard, J. Brown, and R. West. Assessing the Association Between the Use of NRT for Smoking Reduction and Attempts to Quit Smoking Using Propensity Score Matching. Elsevier, 2012.

MLA aipamena

Beard, E., et al. Assessing the Association Between the Use of NRT for Smoking Reduction and Attempts to Quit Smoking Using Propensity Score Matching. Elsevier, 2012.