Harper, L. (2014). Illegal drugs in the US: Markets and trends for marijuana, meth, heroin and cocaine. Nova Publishers.
Chicago-Zitierstil (17. Ausg.)Harper, Lesley. Illegal Drugs in the US: Markets and Trends for Marijuana, Meth, Heroin and Cocaine. New York: Nova Publishers, 2014.
MLA-Zitierstil (8. Ausg.)Harper, Lesley. Illegal Drugs in the US: Markets and Trends for Marijuana, Meth, Heroin and Cocaine. Nova Publishers, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.