Cita APA (7a ed.)

Power, R. (1989). Participant observation and its place in the study of illicit drug abuse. British journal of addiction, 84(1), 43-53.

Cita Chicago Style (17a ed.)

Power, Robert. "Participant Observation and Its Place in the Study of Illicit Drug Abuse." British Journal of Addiction 84, no. 1 (1989): 43-53.

Cita MLA (8a ed.)

Power, Robert. "Participant Observation and Its Place in the Study of Illicit Drug Abuse." British Journal of Addiction, vol. 84, no. 1, 1989, pp. 43-53.