@article{Song2011,
author = {Song, A.V.  and Ling, P.M. },
title= {Social smoking among young adults: Investigation of intentions and attempts to quit},
year = {2011},
doi = {10.2105/AJPH.2010.300012},
journal = {American Journal of Public Health },
volume = {101},
number = {7},
pages = {12911296},
}