Cita APA (7a ed.)

Brain, K., Parker, H., & Bottomley, T. (1998). Evolving crack cocaine careers. Research findings, 85, 1-4.

Cita Chicago Style (17a ed.)

Brain, Kevin, Howard Parker, y Tim Bottomley. "Evolving Crack Cocaine Careers." Research Findings 85 (1998): 1-4.

Cita MLA (8a ed.)

Brain, Kevin, et al. "Evolving Crack Cocaine Careers." Research Findings, 85, 1998, pp. 1-4.