Cita APA (7th ed.)
BLESS, R., & ET AL. (1997). URBAN DRUG POLICIES IN EUROPE 1993. AMSTERDAM BUREAU OF SOCIAL RESEARCH AND STATISTICS.
Cita Chicago (17th ed.)
BLESS, R., i ET AL. URBAN DRUG POLICIES IN EUROPE 1993. AMSTERDAM: AMSTERDAM BUREAU OF SOCIAL RESEARCH AND STATISTICS, 1997.
Cita MLA (9th ed.)
BLESS, R., i ET AL. URBAN DRUG POLICIES IN EUROPE 1993. AMSTERDAM BUREAU OF SOCIAL RESEARCH AND STATISTICS, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.