Cita APA (7a ed.)

Longshore, D., Annon, K., Anglin, M. D., & Grills, C. (1997). Desire for help among African-American drug users. Journal of drug issues, 27(4), 755-770.

Cita Chicago Style (17a ed.)

Longshore, Douglas, Kiku Annon, M. Douglas Anglin, y Cheryl Grills. "Desire for Help Among African-American Drug Users." Journal of Drug Issues 27, no. 4 (1997): 755-770.

Cita MLA (9a ed.)

Longshore, Douglas, et al. "Desire for Help Among African-American Drug Users." Journal of Drug Issues, vol. 27, no. 4, 1997, pp. 755-770.