Yoe Qing และ Lakkhana Termsirikulchai. (2011) Tobacco use and factors related tobacco use among middle school students in China based on ecological model. Mahidol University:ม.ป.ท.Yoe Qing และ Lakkhana Termsirikulchai. 2011. Tobacco use and factors related tobacco use among middle school students in China based on ecological model. ม.ป.ท.:Mahidol University;Yoe Qing และ Lakkhana Termsirikulchai. Tobacco use and factors related tobacco use among middle school students in China based on ecological model. ม.ป.ท.:Mahidol University, 2011. Print.