Challenging Prohibition: Is Prohibition Effective?

References:
1. Lenke, L. & Olsson, B. (1999) “Swedish drug policy in perspective”, i Derks, J., van Kalmthout, & Albrecht, H.-J. (red.) Current and future drug policy studies in Europe, Freibourg.
2. Centralforbundet for alkohol- och narkotikaupplysning, "Drogutvecklingen i Sverige 2006" Report number 98.
3. Transform Drug Policy Foundation, "What is the true cost of prohibition? Why we need an audit" from http://www.tdpf.org.uk/Policy_Economics_WhyWeNeedAnAudit.htm