Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Centers for Disease Control and Prevention,"Youth risk behavior surveillance : National college health risk behavior survey United States, 1995 Morbidity and Mortality Weekly Report",Surveillance Summaries,,,1997,46,6,1-54,https://cir.nii.ac.jp/crid/1572543025711105536,