Campbell Collaboration & Egli, N. (2009). Effects of drug substitution programs on offending among drug-addicts. Campbell systematic reviews.
Chicago-Zitierstil (17. Ausg.)Campbell Collaboration und Nicole Egli. "Effects of Drug Substitution Programs on Offending Among Drug-addicts." Campbell Systematic Reviews 2009.
MLA-Zitierstil (9. Ausg.)Campbell Collaboration und Nicole Egli. "Effects of Drug Substitution Programs on Offending Among Drug-addicts." Campbell Systematic Reviews, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.