Cita APA (7a ed.)

Denning, P., Little, J., & Glickman, A. (2004). Over the influence: The harm reduction guide for managing drugs and alcohol. Guilford.

Cita Chicago Style (17a ed.)

Denning, Patt, Jeannie Little, y Adina Glickman. Over the Influence: The Harm Reduction Guide for Managing Drugs and Alcohol. New York [u.a.]: Guilford, 2004.

Cita MLA (8a ed.)

Denning, Patt, et al. Over the Influence: The Harm Reduction Guide for Managing Drugs and Alcohol. Guilford, 2004.