APA
Demetrovics Z., Fountain J. & Kraus L. (2009). Old and new policies, theories, research methods and drug users across Europe. Lengerich: Pabst Science Publishers.
Chicago
Demetrovics Zdolt, Fountain Jane and Kraus Ludwig. 2009. Old and new policies, theories, research methods and drug users across Europe. Lengerich: Pabst Science Publishers.
Harvard
Demetrovics Z., Fountain J. and Kraus L. (2009). Old and new policies, theories, research methods and drug users across Europe. Lengerich: Pabst Science Publishers.
MLA
Demetrovics Zdolt, Fountain Jane and Kraus Ludwig. Old and new policies, theories, research methods and drug users across Europe. Lengerich: Pabst Science Publishers. 2009.
BOEKEN/BROCHURES