Butterfield, F. (2002). As drug use drops in big cities, small towns confront upsurge.
Chicago-Zitierstil (17. Ausg.)Butterfield, Fox. As Drug Use Drops in Big Cities, Small Towns Confront Upsurge. 2002.
MLA-Zitierstil (9. Ausg.)Butterfield, Fox. As Drug Use Drops in Big Cities, Small Towns Confront Upsurge. 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.