Cita APA

Hser, Y., Huang, D., Brecht, M., Li, L., & Evans, E. (2008). Contrasting Trajectories of Heroin, Cocaine, and Methamphetamine Use.

Citación estilo Chicago

Hser, Yih-Ing, David Huang, Mary-Lynn Brecht, Libo Li, y Elizabeth Evans. Contrasting Trajectories of Heroin, Cocaine, and Methamphetamine Use. 2008.

Cita MLA

Hser, Yih-Ing, et al. Contrasting Trajectories of Heroin, Cocaine, and Methamphetamine Use. 2008.