APA (7th ed.) Citation
BARRIO, G., & ET AL. (2001). DIFFERENCES IN SEVERITY OF HEROIN DEPENDENCE BY ROUTE OF ADMINISTRATION: THE IMPORTANCE OF LENGTH OF HEROIN USE.
Chicago Style (17th ed.) Citation
BARRIO, G., and ET AL. DIFFERENCES IN SEVERITY OF HEROIN DEPENDENCE BY ROUTE OF ADMINISTRATION: THE IMPORTANCE OF LENGTH OF HEROIN USE. 2001.
MLA (9th ed.) Citation
BARRIO, G., and ET AL. DIFFERENCES IN SEVERITY OF HEROIN DEPENDENCE BY ROUTE OF ADMINISTRATION: THE IMPORTANCE OF LENGTH OF HEROIN USE. 2001.
Warning: These citations may not always be 100% accurate.