Cita APA (7a ed.)

Hunger, G., Ward, J., & Power, R. (1997). Research and development focusing on peer intervention for drug users. Drugs, 4(3), 259-270.

Cita Chicago Style (17a ed.)

Hunger, G., J. Ward, y R. Power. "Research and Development Focusing on Peer Intervention for Drug Users." Drugs 4, no. 3 (1997): 259-270.

Cita MLA (8a ed.)

Hunger, G., et al. "Research and Development Focusing on Peer Intervention for Drug Users." Drugs, vol. 4, no. 3, 1997, pp. 259-270.