Cita APA (7a ed.)

Mehay, S. L., & Pacula, R. L. (1999). The effectiveness of workplace drug prevention policies: Does zero tolerance work? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Mehay, Stephen L., y Rosalie Liccardo Pacula. The Effectiveness of Workplace Drug Prevention Policies: Does Zero Tolerance Work? Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Mehay, Stephen L., y Rosalie Liccardo Pacula. The Effectiveness of Workplace Drug Prevention Policies: Does Zero Tolerance Work? National Bureau of Economic Research, 1999.