Cita APA (7th ed.)
HOWARTH, P., & DUFFY, P. (2010). POWDER COCAINE AND PROBLEMATIC DRUG USERS: A COMPARATIVE STUDY OF THE CHARACTERISTICS OF DIP CLIENTS IN MERSEYSIDE (APRIL 08-MARCH 09). LIVERPOOL JOHN MOORES UNIVERSITY.
Cita Chicago (17th ed.)
HOWARTH, P., i P. DUFFY. POWDER COCAINE AND PROBLEMATIC DRUG USERS: A COMPARATIVE STUDY OF THE CHARACTERISTICS OF DIP CLIENTS IN MERSEYSIDE (APRIL 08-MARCH 09). LIVERPOOL: LIVERPOOL JOHN MOORES UNIVERSITY, 2010.
Cita MLA (9th ed.)
HOWARTH, P., i P. DUFFY. POWDER COCAINE AND PROBLEMATIC DRUG USERS: A COMPARATIVE STUDY OF THE CHARACTERISTICS OF DIP CLIENTS IN MERSEYSIDE (APRIL 08-MARCH 09). LIVERPOOL JOHN MOORES UNIVERSITY, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.