APA (7th ed.) Citation
O'Connor, R., & et al. (2011). US smokers' reactions to a brief trial of oral nicotine products.
Chicago Style (17th ed.) Citation
O'Connor, R.J, and et al. US Smokers' Reactions to a Brief Trial of Oral Nicotine Products. 2011.
MLA (9th ed.) Citation
O'Connor, R.J, and et al. US Smokers' Reactions to a Brief Trial of Oral Nicotine Products. 2011.
Warning: These citations may not always be 100% accurate.