APA (7th ed.) Citation

Power, R., Stimson, G. V., & Foster, R. (1994). Who uses cocaine? Social profiles of cocaine users. Addiction research, 2(2), 141-154.

Chicago Style (17th ed.) Citation

Power, R., G. V. Stimson, and R. Foster. "Who Uses Cocaine? Social Profiles of Cocaine Users." Addiction Research 2, no. 2 (1994): 141-154.

MLA (9th ed.) Citation

Power, R., et al. "Who Uses Cocaine? Social Profiles of Cocaine Users." Addiction Research, vol. 2, no. 2, 1994, pp. 141-154.