Cita APA (7a ed.)

USA Office of National Drug Control Policy & MacCaffrey, B. R. (1997). What America's users spend on illegal drugs, 1988 - 1995. Office of National Drug Control Policy.

Cita Chicago Style (17a ed.)

USA Office of National Drug Control Policy y Barry R. MacCaffrey. What America's Users Spend on Illegal Drugs, 1988 - 1995. Washington, DC: Office of National Drug Control Policy, 1997.

Cita MLA (9a ed.)

USA Office of National Drug Control Policy y Barry R. MacCaffrey. What America's Users Spend on Illegal Drugs, 1988 - 1995. Office of National Drug Control Policy, 1997.