Cita APA (7a ed.)

Farrell, M., Griffiths, P., & Strang, J. (1999). Finding the balance for different policy options. Current and future drug policy studies in Europe, 89-108.

Cita Chicago Style (17a ed.)

Farrell, Michael, Paul Griffiths, y John Strang. "Finding the Balance for Different Policy Options." Current and Future Drug Policy Studies in Europe 1999: 89-108.

Cita MLA (9a ed.)

Farrell, Michael, et al. "Finding the Balance for Different Policy Options." Current and Future Drug Policy Studies in Europe, 1999, pp. 89-108.