Cita APA (7th ed.)
PARKER, H., & ET AL. (2003). UK DRUGS UNLIMITED. NEW RESEARCH AND POLICY LESSONS ON ILLICIT DRUG USE. PALGRAVE.
Cita Chicago (17th ed.)
PARKER, H., i ET AL. UK DRUGS UNLIMITED. NEW RESEARCH AND POLICY LESSONS ON ILLICIT DRUG USE. HAMPSHIRE: PALGRAVE, 2003.
Cita MLA (9th ed.)
PARKER, H., i ET AL. UK DRUGS UNLIMITED. NEW RESEARCH AND POLICY LESSONS ON ILLICIT DRUG USE. PALGRAVE, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.