Cita APA (7a ed.)

Observatorio Europeo de las Drogas y las Toxicomanías & Korf, D. J. (1999). Outreach work among drug users in Europe: Concepts, practice and terminology. Office for Official Publications of the European Communities.

Cita Chicago Style (17a ed.)

Observatorio Europeo de las Drogas y las Toxicomanías y Dirk J. Korf. Outreach Work Among Drug Users in Europe: Concepts, Practice and Terminology. Luxembourg: Office for Official Publications of the European Communities, 1999.

Cita MLA (9a ed.)

Observatorio Europeo de las Drogas y las Toxicomanías y Dirk J. Korf. Outreach Work Among Drug Users in Europe: Concepts, Practice and Terminology. Office for Official Publications of the European Communities, 1999.